6l80e Downshift Tuning

It causes transmission overheating, slipping and shuddering and poor fuel economy. GM LS7 Flywheel. Pontiac Trans Am looks more like a modern LeMans racer than a classic muscle car. After reviewing the owners manual, I was suprised that when shifting from "D" to "M" the transmission actually down shifts, and if the trans. As such I never bothers to stay up on tuning them like the engine, I had no need. These closed-throttle downshifts take a while to complete, so if you need to get back on the gas after decelerating in the middle of a shift, you're stuck waiting for the shift to complete before the throttle will. The automatic gearbox in the VE V8 is the 6L80e, but its behaviors and problems have changed over time. The 10R90, a $1,595 option, was engineered to fit into the same space as the 8L90, which was designed to fit in the same space as GM's 6L80. 70e than the 80e/85e. PCMs are built with microchips that can be reprogrammed electronically without being removed from the vehicle. Have had it into the dealer 6 times for the harsh down shift on rapid deceleration. No one has perfected the tuning on the A6. Can someone please help me I'm having a similar problem. It’s steadily evolved from the simple Oldsmobile Hydra-Matic introduced in the 1940’s (the first fully automatic transmission ever) to the simple yet effective style of the 2-speed Powerglide of the 1960’s, and finally into the smooth as silk, but tough as nails electronically controlled 4LXX. Our transmission controllers are compact, packed with features, and have a built-in display for tuning as well as user-friendly software for more in-depth tuning. 0 overall gear ratio spread is wider. I also decreased shift times to around. Late shifts, downshift clunk, 3-4 clutch failure, no lockup, 2-4 band failure, early shifts, 1-2 slide/bump, 2-3 cut loose; reverse clutch failure, 83-87 lets you make T. The transmission will definitely need tuning. We can also provide tuning for the 4l60e, 4l65e, and 6l80e. The computer needs some wheel spin in order to controll the torque. 255/256 is pretty much considered maxed out, as it will likely never be reached. Boarderx3120. 11-28-2014, 04:24 PM #9. Basic instruction for tuning the 4L60E transmission for better part throttle shifting. To solve your Cadillac Escalade transmission problems once and for all, you might consider getting a remanufactured 4L60E / remanufactured 4L65 / remanufactured 6L80E / remanufactured 8L90. 03-28-2015 05:22 PM. Hughes Performance has a 4L80E transmission available for practically any engine combination and power level. I reported this issue numerous times at the dealership. General Motors to Shutter Australia’s Beloved Holden by 2021. 27 sec for normal, but i control the shift time using shift time adders/inertia adders, so i can remove some time from the shift past 4500rpm. Offers six forward speeds, with gear ratios of 4. 2 HDi 100hp Delivered on 05-05-2020 Car Tuning (stage 1) Volvo - 2. I also left the mph that the converter would lock up, so it would drive like the old 4l60e. It's upshifts are a little higher and it downshifts more readily. The 2012 Chevrolet Silverado 1500 has 6 problems reported for transmission clunking. The GM 4L80E 4-speed overdrive transmission is the ultimate overdrive platform to suit virtually combination that requires the strongest overdrive transmission possible. Transmissions, Racing Transmissions, C4 Transmissions, C6 Transmissions, AOD Transmissions, AODE Transmissions, 5r55 Transmissions, Valve Bodies, Bellhousings, Torque. To improve off the line performance for both towing and spirited driving, a wider 7. Tuning, Diagnostics, Electronics, and Wiring What files to get to downshift earlier. 86-95 Gmc 5. 15 pin 4l60e 15 pin 4l60e. 06 to 1 and an overdrive ratio of. Add another satisfied customer to the Lew tune database! 2011 Silverado 4x4, 5. Sonnax High Performance Product Line Manager, Gregg Nader, delivers an in-depth look at four popular GM 6L80-series transmission upgrades and repairs. It will only go down to gear 2 or 3 and then go. This depends greatly on tuning and if you install the optional intercooler and 2. lockup-no wires needed. A slide-bump is the combination of a slow, slip shift that finishes suddenly with a firm "bump. They are strange, complicated, and misunderstood. The thing with getting one from the salvage yard is that they don't really adjust the price. Holden’s demise is part of GM’s overall strategy to leave right-hand drive markets, follows end of. There are generally two speed sensors that work in conjunction to provide accurate transmission data to the vehicle’s powertrain control module. Tuning for your 6L80e Transmission. Contact (904) 845-4767. Making matters worse, I'm trying to learn some tricks with the traction control as it has an open diff out back. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps: Torque Converter lock up. I did notice the same thing on the Ram ecodiesel however. 8 Liter 4 cylinder Duramax diesel engine going into their vans. that holding or downshifting was the best way to keep our speed under control. The ECM side was great but it shifted way too hard from 1-2, knock the breath out of you hard. Earlier this year we picked up a 2010 Camaro SS/RS packing the L99 engine and 6L80E automatic transmission combo. It's steadily evolved from the simple Oldsmobile Hydra-Matic introduced in the 1940's (the first fully automatic transmission ever) to the simple yet effective style of the 2-speed Powerglide of the 1960's, and finally into the smooth as silk, but tough as nails electronically controlled 4LXX. In most of our swaps using the factory Toyota speedo the speed signal within HPtuners is more for internal logging or things like downshift points. Gen III PCM control goes beyond the engine to be one of best solutions for electronically controlled 4-speed automatic transmissions. Which is still a great improvement, but some people always want more, and that's where the aggressive comes into play!. 39:1 seventh gear, (and a very aggressive 4. -avoid downshifting to brake or slow vehicle when it would cause the engine speed to exceed 4000 rpm-don't lug the engine For the first 1500 miles (2141 km)-do not participate in track events, sport driving schools or similar activities-check engine oil consumption with every refueling and add if necessary A couple of other interesting bits I. 1 using the amt user interface. The 6L80 has a maximum RPM limit of 6500 RPM. If you disconnect the cables leading to your vehicle's battery, the computer's source of power, and leave them disconnected for at least half an hour, you have essentially turned off your vehicle's computer and forced it to reboot. You'll see how I modified those variables as well. This eight-speed dream is GM's newest automatic transmission for the 2015 C7 Chevolet Corvette. With the 6l80 it might drop a gear passing but I doubt (hope )not much else. It consists primarily of a four-element torque converter, an integral fluid pump and converter housing, a single and double planetary gear set, friction and mechanical clutch assemblies, and a hydraulic. Zeroing out the slip tables is not the true fix. I'm also going to do a bit deeper dive into the programming side of it in the next few. Tuneless Patent-pending internal calibration technology "tuneless" allows install without the need for additional transmission tuning software or programmers. This transmission and transmission controller can be found in other vehicles to. Our Street/Strip series 4L80E is a great choice for combinations producing up to 850 flywheel horsepower. natures child Posts: 8 Joined: Thu Feb 06, 2014 4:41 pm Car: 1999 Infiniti QX4 2004 Ford F150 FX4 1964 Pontiac GTO. Also, if I'm cruising in 6th on a two-lane road and gun it to pass, there's a (again) VIOLENT clunk on the down-shift. You may have to register before you can post: click the register link above to proceed. thats why i run it in third my buddy has a 04 sierra with 60k on it and is able to pull the same load at 75 without any downshifting both trucks are bone stock with 3. 5K ohm resistor and connect to ground. 6l80e tuning - cojutepeque. It’s come a long, long way in its journey through GM’s history. I can assure you that there are 5 shifts. Richard Wardell 1,494 views. I do it all the time to slow down using engine compression instead of brakes. TV cable is adjusted correctly. A fully programmable transmission controller to suit the Nissan / Jatco RE4 4 speed transmissions. I reported this issue numerous times at the dealership. At Hughes Performance we rebuild and repair transmissions and torque converters. Need some pionters on 6 Speed 6L80E Transmission Can someone share some pointers on 6L80E transmission tuningLike what to focus on & what to stay away from Going to be working on a 2011 Silverado 6. 06 to 1 and an overdrive ratio of. 6667 A1000: 3. I posted the tune does anyone have an idea. natures child Posts: 8 Joined: Thu Feb 06, 2014 4:41 pm Car: 1999 Infiniti QX4 2004 Ford F150 FX4 1964 Pontiac GTO. It feels like a bad universal joint, I crawled under the truck and found nothing wrong with the u-joints. It also allows customization of the transmission's behavior with user-friendly software. The limp mode does often reduce the power and limit the RPM of the engine so you can drive your car to a workshop without. This is a discussion on a tuning guide i found based on hptuners within the Computer & Tuning forums, part of the LSx Technical Help Section category; PCM Tuning Process Flow 1. Monster transmission rebuild kit. an anemic, low compression 350 may be able to stall a converter to about 2000 rpm. Smooth pull through all gears now, shifts like a trans should, and Lew even kicked the idle up a hair, which got rid of the rough idle. Table Select: Using a toggle switch allowing (2) separate shift tables, you can view a street calibration in Table 1 and a drag strip calibration for Table 2. vehicle weights. General Motors to Shutter Australia’s Beloved Holden by 2021. It has been used in the. Note: changing or disabling these values can potentially reduce transmission life and/or damage the transmission. TSB Seems To Fix 8-Speed Automatic GM Transmission ProblemsAugust 13, 2019 GMT 900 GMC, Chevy Vehicles Subject To Frequently Cracking Dashboards August 11, 2012 Multiple GMC Acadia Owners Report. 6L80E / 6L90E: 4. This took a bit of fine tuning to find the exact spot where the neutral wire override would disengage, and the sensor would engage the magnet. Self diagnostics allow users of every skill level to fully utilize the EZ-TCU™. com and like us. Circle Track Series Powerglide Transmissions. GMC Performance Chips are best in class horsepower, torque and fuel economy gains. But one thing that's strange is the transmission tuning on the 6L80. Many ignition modules (aka. 2l and the 6 speed in it. The 6L80 is truly an an amazing transmission with Corvettes and G8s being some of the first cars to get this box. This problem is one that most 4T65E transmissions experience sooner or later. It's come a long, long way in its journey through GM's history. ALL MODELS STREE/RACE. Even at stock horsepower levels, Circle D reports that properly tuning the 6L80E is critical to transmission longevity. The 4L80E is the descendant of the "Ole Reliable" TH400 transmission. Spending a few minutes learning the basics of how they work can save you a lot of headaches and money. Learn online at your own pace. This is a discussion on a tuning guide i found based on hptuners within the Computer & Tuning forums, part of the LSx Technical Help Section category; PCM Tuning Process Flow 1. Gen III PCM control goes beyond the engine to be one of best solutions for electronically controlled 4-speed automatic transmissions. This trans has a low first gear ratio of 3. If you're considering utilizing a factory intake, injectors, and cable operated throttle body, with a 4L60, 4L65, 4L70, or 4L80 GM transmission, FiTech's Ultimate LS standalone self-learning ECU with transmission control will get your engine ready for optimal performance. Phone: (864) 646-8920 Email: [email protected] 3/6l80, cat back and intake tube. Indeed it appears to be the transmission control module and pissible solenoid assembly. 3/6L80E, TVS1900 @ 6psi Traded That 5or 6th gear downshift to 4th is hard on a stock I order emissions on ppei dsp5 tuning and was wondering. 5K ohm resistor and connect to ground. During the development of the all-new, GM-developed Hydra-Matic 8L90 8-speed automatic transmission (RPO M5U) (Fig 1), offered on the 2015 Corvette, Silverado, Sierra, Yukon, Yukon XL, and Escalade, more than 550 computer-aided engineering analysis were made to ensure strength, durability, performance and refinement. 03 ratio in the 6L80 / 6L90. You may have to register before you can post: click the register link above to proceed. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. After reading over the 6L80E tuning guide thats posted on here and getting a hold of the bluecat software I made my 2nd attempt at a trans tune. Can someone please help me I'm having a similar problem. The adaptive control system sensed input and output speed changes as shifts occurred, and adjusted hydraulic pressure accordingly, to. Please call us today for details and pricing. 10's with 265/75/16"s and a cruising speed of 70mph (for example) puts the engine at 2040rpm in 6th gear which it can't maintain and will downshift to 5th. sv 6l80e tuning. "The 6L80E is a clutch-to-clutch unit, which means that unless one clutch. 4l60e Connector 4l60e Connector. This was very annoying and you can imagine how loaded the trans and truck was when trying to accelerate about 30mph, after slowing down. Join Date: Jul 2016. You can either highlight the box you want to change and enter the number in the box in the upper corner of the window and hit the = button or just type the number into the variable box once selected. Check out how it compares to the six-speed automatic. Late shifts, downshift clunk, 3-4 clutch failure, no lockup, 2-4 band failure, early shifts, 1-2 slide/bump, 2-3 cut loose; reverse clutch failure, 83-87 lets you make T. Ok so I know I said to run a 07 and newer Gen 4 engine. maybe it's an emissions tuning thing, low rpm and high load usually results in high temps which is not great for NOx reduction. There are some issues with 24x or 58x reluctor wheels but that has more to do with which PCM will work with which engine. Learn online at your own pace. 0:30 Please avoid some of these. pdf), Text File (. Now has about 34K miles on it but has done the following since new: Works fine when NOT towing trailer in trailer tow mode, i. The lack of Porsche (once again) and this time, oddly, Volkswagen is a little disheartening. 2006 BRM Jetta TDI. Earlier this year we picked up a 2010 Camaro SS/RS packing the L99 engine and 6L80E automatic transmission combo. A forced downshift into a lower gear is possible below calibrated speeds. The limp mode does often reduce the power and limit the RPM of the engine so you can drive your car to a workshop without. Tuning for your 6L80e Transmission. Sonnax High Performance Product Line Manager, Gregg Nader, delivers an in-depth look at four popular GM 6L80-series transmission upgrades and repairs. Business Seller - ALAN POPE PERFORMANCE PRODUCTS. dance shows. The 6L80e is a nightmare at the moment. The Banks system, assuming it's the full kit, is improved exhaust and air intake plus some additional electronics to manage the shift points a bit. With its well documented project builds, technical articles, factory specifications, photo gallery, classifieds, active message forum, product reviews and original automotive content it's an unbeatable source. All 6L80 questions answered by experts. 2006 BRM Jetta TDI. I'm also going to do a bit deeper dive into the programming side of it in the next few. With this done, my 6L80E swap is now 100% functional. The 4L80E is a 4-speed (with overdrive), electronically controlled transmission, with ratios:. NEW GEAR VENDORS OVERDRIVE UNITS - $2,695. The worst complaints are not shifting properly, transmission clunk, and transmission slips. The extra downshifting (and upshifting) in city driving is because the 6L80 is programmed to get to a higher gear as quickly as possible in efforts to reduce fuel consumption. We'll show you how we tuned a 4L65E to give us both a much more aggressive downshift schedule as well as a much cleaner and smoother short-shift schedule at light throttle that saved us a bunch of fuel during part-throttle cruise. FiTech Go Shift Transmission Controller for GM 4L60/65/80/85E & Ford 4R70W, AODE. This depends greatly on tuning and if you install the optional intercooler and 2. It shifts REALLY early and slow to downshift, holds a gear way too long when trying to accelerate. 106 Final Drive Ratio: 3. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. Brake Shift Pressure vs. Accelerate vehicle to 60 MPH at half-throttle. Holden's demise is part of GM's overall strategy to leave right-hand drive markets, follows end of. Edit: I attached a sample table of what I'm envisioning for a shift/TCC table. We are the Leading Source for Transmissions that Shift Better and Last Longer! When it comes to transmissions, no. Table Select: Using a toggle switch allowing (2) separate shift tables, you can view a street calibration in Table 1 and a drag strip calibration for Table 2. 10 quarts and weighs 215lbs. 39:1 seventh gear, (and a very aggressive 4. A higher stall converter should also be at the top of your mod list. I had to tune mine with a diablo tuner and even now its not 100% perfect but its close. 10's with 265/75/16"s and a cruising speed of 70mph (for example) puts the engine at 2040rpm in 6th gear which it can't maintain and will downshift to 5th. 2001 2500HD Red on Black. Anyone else seeing any thing new If you're following Quadstar Tuning on facebook, he's swapping a 14b into his truck in anticipation of the 6l80 swap. 56 first gear ratio, compared to the 4. You can now get a 10 year old truck engine from the salvage yard for for well under a thousand dollars. 5L Diesel Engine Discuss the 6. It will not work on consoles using the ClubSport USB Adapter. 66rfe vs 68rfe Discussion in 'Heavy Duty' started by mtofell, Nov 14 It's gotten to the point where it waits so ridiculously long to downshift that the truck starts to convulse and shake like it's going to die. Add another satisfied customer to the Lew tune database! 2011 Silverado 4x4, 5. US Shift Electronic Transmission Control Systems let you take charge of your 6R80, 4R70W, E4OD, 4R100, 4L60E, or 4L80E transmission and unlock its true potential. MAD DOG TRANSMISSIONS 1025 Union Center Dr Suite E Alpharetta, GA 30004 Monday- Friday from 8:00 AM to 5:00 PM (770) 781-0949. Tuning, Diagnostics, Electronics, and Wiring What files to get to downshift earlier. It did take a bit to get a tune that worked like I wanted. Automatic Transmission - LS V8 Automatic Transmissions, 4L60E, 4L80E, TH350, TH400, TH2004R, Powerglide, Converters, and Shift Kits discussion, how-to guides, and technical help. 452 bhp max engine power, 531 ft. is in 6th gear, it will downshift to 4th when shifting to manual mode. Release accelerator pedal and set overdrive switch to OFF position. The transmission used in the Ford F-150, has a fluid capacity of 12. Now, when I drop down into 3 / D4, it goes into TUTD mode and I can use paddle shifters at will. 1994-95 Mustang 5. Joined: 03 Apr 1998 Posts: 369 Location: South Dakota - 2010 GMC Sierra 1500 - Crew Cab / 4WD / 6. But I need to know how many more miles I can expect out of it. RI Chevy Silveradoman. JET's exclusive Tri-Power tuning allows you to program for performance using lower cost regular octane fuel, or for optimal performance gains you can program for midgrade or premium fuels JET Performance Programmer Plus gives you the ability to modify air and fuel ratios, ignition timing, shift points, shift firmness, speed limiter and rev limiter settings. I have never been hard on this truck or ever took it off road. John Parmenter, Precision International Tech Advisor goes over in detail resolving problems on the 6L80 transmission. Re: Here's what's gonna break on your 5th gen Also keep in mind the article was first published in June 2011 (I have the hard copy at home), which means it was probably written in December 2010. 4-SPEED AUTOMATIC. 6L V6 with the 6 speed auto transmission. Location: Oceanside. (3) momentary push buttons for upshifting and downshifting the transmission when the manual lever is pulled into drive. The second is a PCS unit dubbed the TCM2650 that will manage the GM 6L80E family of transmissions. Intermittent harsh shifting – Chevrolet Suburban 4L60E Problem – A common 4L60E transmission problem is an intermittent hard 1-2 shift, often accompanied by engine bogging. Richard Wardell 1,494 views. We'll show you how we tuned a 4L65E to give us both a much more aggressive downshift schedule as well as a much cleaner and smoother short-shift schedule at light throttle that saved us a bunch of fuel during part-throttle cruise. Here's the story 2010 Suburban LTZ 4x4 with 33,000 miles and the 6L80E. View more photos in the gallery: 2020 Corvette Vin #0001 SCOTTSDALE, Ariz. Performance torque converters and transmission torque converter replacement for cars and trucks from RevMax Performance Converters. All-New 8L90 8-Speed Transmission - continued from page 1 The Transmission Control Module (TCM) is externally mounted. The 6L90's case also accommodates additional fasteners between the transmission and the transfer case for improved driveline noise/vibration performance. THE TRANSMISSION SUPERSTORE. 23:1 axle ratio which makes the numbers not. Erratic shifting. Deprecated: Function create_function() is deprecated in /www/wwwroot/dm. The 01 os always has a harsh 2-1 downshift in my lly (as well as my lb7) , can't modify slip inhibit tables, and lose my high idle. 2006 BRM Jetta TDI. Designed with the latest drivetrain technology developments, TCI's 6X six-speed automatic transmission has six forward gears (2. If you're gradually accelerating, as you would when going from block to block/light to light or in stop and go traffic, the trans has a tendency to upshift too soon. Joined: 03 Apr 1998 Posts: 369 Location: South Dakota - 2010 GMC Sierra 1500 - Crew Cab / 4WD / 6. 70e than the 80e/85e. 2007 Escalade Ext, and whenever im just driving around at 50 and i step on the gas, the truck doesnt downshift how its supposed to. 88 gears now, and with the supercharger it rarely downshifts on big hills doing highway speeds, tons of torque. Discuss the 6. Ok so I know I said to run a 07 and newer Gen 4 engine. This was very annoying and you can imagine how loaded the trans and truck was when trying to accelerate about 30mph, after slowing down. JET‘s exclusive Tri-Power tuning allows you to program for performance using lower cost regular octane fuel, or for optimal performance gains you can program for midgrade or premium fuels JET Performance Programmer Plus gives you the ability to modify air and fuel ratios, ignition timing, shift points, shift firmness, speed limiter and rev limiter settings. It is definitely not the 2-3 flare issues others are having. 2007 JKU X, 6. a tuning guide i found based on hptuners. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. Transmission shudders seem worse than they actually are. Stock questions/aftermarket mods. Holley Adjustable Clutch Master Cylinder, '98-'02 Camaro and Firebird. TRANSMISSION EXCHANGE CO is located at 1803 NE MLKing Blvd. If you are thinking about racing your AOD-E Mustang, an upgraded external fluid cooler is highly recommended. If you just floor it and let the trans kick down it will put a lot of unnecessary wear on the trans. Within 1 or 2mph at 75-80. Posted in ATSG News ATSG Tech Tips ATSG Product Spotlight By jon glatstein. ALL MODELS STREE/RACE. Now, after two cam changes, same trans operation with both. Both transmissions have pan to ground clearance issue when installed in older cars, and you'll want to look into a GTO 6L80 pan for the 6L80 to get a little more ground clearance. I have the 6. To improve off the line performance for both towing and spirited driving, a wider 7. Hays 10-730 Billet Steel Flywheel, LS1/LS6 Chevy. Reflashing is a process where you electronically transfer approved files from a vehicle manufacturer's website using a diagnostic connector. Join Date: Jul 2016. And obviously some more tuning and to convert the transmission. gearing of the 8L90 but so far it looks a vast improvement. 667:1 on the 6L80, while on the 8L90, it's 4. Self diagnostics allow users of every skill level to fully utilize the EZ-TCU™. The PCS Universal Automatic Transmission Controller (TCM-2000) comes with a software cd, manuals, mounting hardware, for $675. I have never been hard on this truck or ever took it off road. 2ltr 6 speed 6L80E truck with a Magnacharger in a couple of weeksI've yet to touch a 6L80E, the 4L60E is fun to work with, 6L80E looks way. Heavy-duty 4-speed. sv 6l80e tuning. Also, we need to adjust the downshift MPH by the same percentage that we adjusted the upshift MPH. Offers six forward speeds, with gear ratios of 4. FiTech Go Shift Transmission Controller for GM 4L60/65/80/85E & Ford 4R70W, AODE. Message Seller + Add to Favorites. FiTech Go Shift Transmission Controller for GM 4L60/65/80/85E & Ford 4R70W, AODE. SHIFT KIT 700-R4 81-93 (TV VALVE UPGRADE) FIX-TV valve. php on line 143 Deprecated: Function create_function() is deprecated in. STOP BY AND SAY HI! Welcome to Hughes Performance HPAdmin 2020-01-02T17:58:35+00:00. 12/6/19 9:53 AM. If I am cruising from 40 to 45 MPH and do a quick Wide open accelleration the transmission downshifts to 1st gear hits the RPM shift point of 5900 and then shifts to second gear instead of just shifting into second gear. All versions use three gearsets: a simple. 106 Final Drive Ratio: 3. But one thing that's strange is the transmission tuning on the 6L80. 2011-2016 LML Duramax. Supported Powertrains We are currently supporting all of the GEN4 GM engines from 2007-2015. I finally finished up the installation of a 4l80e and a 3600 revmax stage 5 converter. Average failure mileage is 24,400 miles. GM Flexplate, 6-Bolt LS to TH350/TH400/4L80 Transmission. ALL MODELS STREE/RACE. A fully programmable transmission controller to suit the Nissan / Jatco RE4 4 speed transmissions. The Winters supplied 4L80e bracket needs modified extensively. "The US Shift transmission control system can interface with any OEM or aftermarket engine induction system, including carbureted and diesel. We'll show you how we tuned a 4L65E to give us both a much more aggressive downshift schedule as well as a much cleaner and smoother short-shift schedule at light throttle that saved us a bunch of fuel during part-throttle cruise. Or you can continue to use the paddles to downshift more or up shift. The 6R80 can likely handle up to 1000HP with proper ECU tuning and potentially even more with the implementation of aftermarket components The 6R80 uses synthetic transmission fluid (Mercon LV). " The Hydra-matic 6-Speed RWD is a fully automatic, six-speed, rear-wheel drive, electronic-controlled transmission. The 6 speed tranny is giving me fits as it tries to get into 4th gear at 25-3o mph and when I try to give it gas or speed up. Need some pionters on 6 Speed 6L80E Transmission Can someone share some pointers on 6L80E transmission tuningLike what to focus on & what to stay away from Going to be working on a 2011 Silverado 6. " Pity we didn't get to sample the non-F-Sport 200t, because it rides much better and doesn't pretend to be sporty. 39:1 seventh gear, (and a very aggressive 4. Here you see I've adjusted the MPH UP 1MPH in 1st (didnt need much) and 9MPH in second and so on. The 4 speed doesnt always downshift when you need it to due to the gear spacing. The solenoid states should change during or shortly after a manual downshift is selected. 2L (L92)/6L80 combo that comes on the new 1/2 ton Silverados/Sieras? I occasionally tow about 8,000 lbs with the receiver and weight bars and was spoiled by the 8. Any thoughts? I have a Midwest Converter 3000 stall w/a manual lockup. I can assure you that there are 5 shifts. I reported this issue numerous times at the dealership. 3L crew cab Z71 back in March and I loved the truck from day one. an anemic, low compression 350 may be able to stall a converter to about 2000 rpm. 3/4 Clutch Pack. Reply to this topic. To use this test the main scanner must be stopped. Pontiac Trans Am looks more like a modern LeMans racer than a classic muscle car. It is a heavy-duty version of the 6L80 six-speed automatic, with a. John Parmenter, Precision International Tech Advisor goes over in detail resolving problems on the 6L80 transmission. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. maybe it's an emissions tuning thing, low rpm and high load usually results in high temps which is not great for NOx reduction. The transmission doesn't down shift as much going up slight grades and the oil usage is down to 1 qt every 2500 miles. Monster transmission rebuild kit. Message Seller + Add to Favorites. I am new to this site and found it while researching the harsh down shift issue. Unfortunately, some of the truck owners find the weak link of the entire truck/drivetrain combination. downshift tuning so my latest adventure has been to get the downshifts to be smooth almost like stock. 4L65-E Gear Ratios. I purchased a new 2018 1500 with the 5. 3L 6L80E, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project. 2L(truck, LS3, LS3 480), and blown, cammed, modified versions thereof. Note: changing or disabling these values can potentially reduce transmission life and/or damage the transmission. This was very annoying and you can imagine how loaded the trans and truck was when trying to accelerate about 30mph, after slowing down. Get 6L80 transmission rebuilding tips, 6L80 troubleshooting help, 6L80 technical service bulletins, 6L80 diagnostics and 6L80 technical information from TRNW. It's upshifts are a little higher and it downshifts more readily. 6l80etuning. Models and Updates WM. Table Select: Using a toggle switch allowing (2) separate shift tables, you can view a street calibration in Table 1 and a drag strip calibration for Table 2. 10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels. Here is some information I have printed out from GM. Many ignition modules (aka. The cable allows you to route the cable around transmission, cross-members and brake pedals. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you'll ever need for your modern OBDII vehicle. This allows for a more aggressive 4. 0 out of 5 stars 2014 Silverado 4. Our most popular performance transmission, we have been modifying and improving this trans since it was first introduced in the early 80's. 2019+ Duramax 3. My problem is under hard acceleration and the engine has to downshift to second gear or third (only has a problem in these two) the engine will downshift and rev out, then grab and its deffinataly not a firm shift at all, very sloppy. Some people seem to get great tunes, while others can't find a decent tuner if their lives dependent on it. Add another satisfied customer to the Lew tune database! 2011 Silverado 4x4, 5. Increasing it a bit is good, but too much isn't healthy. 5L Diesel Engine Discuss the 6. 818 Sixth: 0. the 6l80e has a 1st gear rpm drop closer tothe 60e/65e. Auto tranny tuning including adjustment to shift speed and firmness, torque reduction stepped down, shift-point change, changes for stall converters New spark/timing maps (makes HP!) WOT fueling adjustment (makes HP!) Improved knock handling Throttle cracker adjustment Many small performance oriented changes. Lokar's Column Cable Shift Linkage is the ultimate answer to interference issues when you are unable to use factory or Lokar's hard column linkage. 03-28-2015 05:22 PM. Most of these functions can be made right in the software. Joined: 30 Apr 1999 Posts: 10759 Location: 2015 Tahoe 2WD 5. Purchase now and Be the first to review "GPI - GM 6L80 Transmission Build" Cancel reply. The 41TE automatic transaxle was designed and built by Chrysler; the transaxle was an electronically controlled four-speed automatic transmission coupled to a transfer shaft and a helical-geared final drive unit. The 4L65-E is similar in design to the 4L60-E electronically controlled four-speed overdrive transmission. The 2nd clutch clearance from the factory is set very loose and as wear occurs. A fully programmable transmission controller to suit the Nissan / Jatco RE4 4 speed transmissions. 3L with Escalade 6L80 and 3. been working on this truck for 8 years and its still not done lol. I have more fine tuning to do, but this is true for both the ECM and TCM. 55, 102 TB, Chiller High Compression/Boost/E85. If you’re considering utilizing a factory intake, injectors, and cable operated throttle body, with a 4L60, 4L65, 4L70, or 4L80 GM transmission, FiTech’s Ultimate LS standalone self-learning ECU with transmission control will get your engine ready for optimal performance. Car Tuning (stage 1) Citroën - Citroën Jumper 2. Stock questions/aftermarket mods. The COMPUSHIFT Sport and Pro are the next generation in technology from the industry leader in Automatic Transmission Controllers - HGM Electronics. For use when using a Winters 4L80e shifter with your 6L80e. The document ID#1875647 covers 2007 GMC Yukon Denali, Cadillac Escalades & 2006 Corvettes with a 6L80 transmission. Have had it into the dealer 6 times for the harsh down shift on rapid deceleration. I reported this issue numerous times at the dealership. Used a Power Torque filter from Oreilly's. The TCM receives and monitors various elec-tronic sensor inputs to execute hundreds of calculations and commands every 6. Ford Knew About Defective Transmissions for Years. So far, I am impressed by these minor tweaks and the truck does drive in a more satisfying way. What I did was as soon as it would start up the overpass, I would hit coast one time to drop the cruise one mile an hour (by this time the truck is down that one MPH already, so it keeps. The ECM side was great but it shifted way too hard from 1-2, knock the breath out of you hard. The 6L90 shares about 75 percent of the parts as the 6L80, although the case of the 6L90 is 35 mm longer than the 6L80 case. They come pre-programmed--just enter your rear tire diameter and rear axle ratio and go, or create your own custom shift characteristics. Injectors, turbo, Malone custom tuning on ecm and tcm. Featured products include the heavy-duty 4-5. Vincent Ciulla is a certified master automotive technician who has diagnosed and repaired light trucks, domestic and foreign cars, and diesel engines, for more than three decades. 89,000 miles. Even after a new transmission was installed for me I had very harsh downshifts. Would a tuner with some shift. 3, 6 speed) with 53,000 to the dealer late last week and took a ride with the service tech for a solid clunking noise when braking. US Shift Electronic Transmission Control Systems let you take charge of your 6R80, 4R70W, E4OD, 4R100, 4L60E, or 4L80E transmission and unlock its true potential. For tuning purposes, the general rule of thumb with Q16 is if you are tuned correctly on a non-oxygenated fuel and you want to move up to an oxygenated fuel, you are going to run about 6 to 8. Motor Trend Editors writer Running The Gamut: One of Our Largest SUV of the Year Tests Ever is Also Our Most Representative It may not be as large in scale or as steeped in tradition as our Car of the Year contest, but more than a few of our editors would argue that Sport/Utility of the Year is the most interesting. Gm High Tech Performance tech article on a LS2 computer reprogrammer. 3L 6L80E, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project. Toolbox harsh downshift into 4th gear at highway speeds 45-70 MPH. I ran across a nice 05 GMC with a Duramax in it. Sonnax High Performance Product Line Manager, Gregg Nader, delivers an in-depth look at four popular GM 6L80-series transmission upgrades and repairs. Our 2009 LTX started to use oil @ the rate of 1 qt every 1000 miles. Count them. Good read but this is not an Allison this is the 6l80e in a 1500 denali with the 6. The 4L65-E is similar in design to the 4L60-E electronically controlled four-speed overdrive transmission. Earlier this year we picked up a 2010 Camaro SS/RS packing the L99 engine and 6L80E automatic transmission combo. All-New 8L90 8-Speed Transmission - continued from page 1 The Transmission Control Module (TCM) is externally mounted. I put long tube headers and a custom tune on it over a year 1-1/2 ago but it hasn't had this problem until the last couple trips. Pontiac Trans Am looks more like a modern LeMans racer than a classic muscle car. pdf), Text File (. ALL MODELS STREE/RACE. The 4L60E automatic transmission is the workhorse of the 3rd generation GM cars along with the 4L80E. " Pity we didn't get to sample the non-F-Sport 200t, because it rides much better and doesn't pretend to be sporty. There are many companies that have pieces to make. Have had it into the dealer 6 times for the harsh down shift on rapid deceleration. is in 6th gear, it will downshift to 4th when shifting to manual mode. I did notice the same thing on the Ram ecodiesel however. Specifications. Camaro Forum - 2009 Camaro / 2010 Camaro / Camaro Z28 SS Forums - Camaro5. Soon as I started the truck later on I got a stabilitrak service, traction control service, check engine light, and the manual shift button , tow haul , and gear indicator in cluster not working. The stock tuning of the 6L80E isn't very aggressive and generally the power band of the LS3 is such that you don't feel a wave of torque coming on like in most turbo cars. a tuning guide i found based on hptuners. 2017 L5P Duramax. Page 2- Torque Converter lock up LSx Swaps. Then it's immediately obvious how much the HF tune helps address the trans tuning. There are many companies that have pieces to make. In model year 2017, General Motors and Ford introduced a jointly developed 10-speed gearbox. No one has perfected the tuning on the A6. Re: 2018 8 speed transmissions Originally Posted by Sierra12 You think the GM 8 speed has programming issues go for a ride in a 6. And obviously some more tuning and to convert the transmission. The 6L80e is 100% computer controlled. 66rfe vs 68rfe Discussion in 'Heavy Duty' started by mtofell, Nov 14 It's gotten to the point where it waits so ridiculously long to downshift that the truck starts to convulse and shake like it's going to die. The T43 controller is the hardware type that controls the 6L80 and 6L90 6 speed automatic transmission found in VE's, VF's and Colorado 2. Learn how to tune GM's 4L60E / 4L65E transmission using HP Tuners to get the drivability and gear shifting that you want and that suits your driving style. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you'll ever need for your modern OBDII vehicle. This page provides information on how the 4L80E automatic transmission from General Motors operates with the MegaShift™ controller, as well as the TunerStudioMS settings needed to configure the controller. The fifth gear is designed to be an overdrive with a high-speed ratio; the ratios for the gear stages are obtained by three planetary gear sets. What rpm or speed to down shift at etc 05-03-2017, 02:51 PM #4: crazydmc. 55, 102 TB, Chiller High Compression/Boost/E85. Want to attend an ATSG 2020 Seminar for Free? Submit your informatio n for a chance for you or one of your techs to attend an ATSG Seminar where you gain access to 268 pages of case studies, money saving tips and tricks about the most popular transmission models and education on more than 75 topics! Enter your information for a chance to win! Contest runs until February 28th - Don't mis. volkswagon dsg. You may have to register before you can post: click the register link above to proceed. the VCM file for the engine and TCM for the transmission. My problem is under hard acceleration and the engine has to downshift to second gear or third (only has a problem in these two) the engine will downshift and rev out, then grab and its deffinataly not a firm shift at all, very sloppy. It was introduced for the 2006 Model Year Cadillac STS-V high-performance rear-drive sedan, and the XLR-V and Chevrolet Corvette two-seat sport coupes and convertibles. 10 quarts and weighs 215lbs. I've read a. It's come a long, long way in its journey through GM's history. The EZ-TCU™ allows for maximum electronic control over shift points, shift firmness and shift speed. To improve off the line performance for both towing and spirited driving, a wider 7. I tried several calibrations, tons of tuning and couldn't fix it. Jump to Latest Follow 1 - 20 of 28 Posts. I finally finished up the installation of a 4l80e and a 3600 revmax stage 5 converter. Get 6L80 transmission rebuilding tips, 6L80 troubleshooting help, 6L80 technical service bulletins, 6L80 diagnostics and 6L80 technical information from TRNW. And obviously some more tuning and to convert the transmission. PCMs are built with microchips that can be reprogrammed electronically without being removed from the vehicle. 3/4 Clutch Pack. Purchase now and Be the first to review "GPI - GM 6L80 Transmission Build" Cancel reply. GM \ Chevy state that there are both hardware & software upgrades that address the 6L80 shift speed for 2008. "The US Shift transmission control system can interface with any OEM or aftermarket engine induction system, including carbureted and diesel. Stand alone computers for the 6L90e are available around $900. It is definitely not the 2-3 flare issues others are having. Honestly, where a turbo really shines on a TJ is when you're trying to climb hills and/or at higher elevation. A bad torque converter interferes with the transfer of power from the engine to the transmission of a vehicle. I have never been hard on this truck or ever took it off road. 62 would downshift on every overpass. The 4L65-E features five-pinion gearsets, heat-treated stator shaft splines, induction-hardened turbine shaft, and seven-plate 3. Vincent Ciulla is a certified master automotive technician who has diagnosed and repaired light trucks, domestic and foreign cars, and diesel engines, for more than three decades. In addition, Toyota and Honda will […]. We are the Leading Source for Transmissions that Shift Better and Last Longer! When it comes to transmissions, no. 06 to 1 and an overdrive ratio of. From youth soccer moms to speed-demon dads, our focus is on providing quality transmissions and quality experience at an awesome value. #N#Now available is the 10L90 floor mount tap shifter! Similar in basic function to our popular 6L80 floor mount tap shifter, this new unit controls tap shifting in a separate gate instead of a switch on the knob. (6L80 shown) 1/4"-28 Jam Nut Cable 5/16"-24 Nylock Nut Rod Ends with 1/4"-28 x 1" If you are going to use the Lokar Electronic Sport Mode Shifter with a factory PCM, you will likely need aftermarket tuning software to create a custom program for the PCM, and you will need to create a custom wiring. Slide the shifter over to the left from drive and you're in the tap shift gate. 6L80 hard 1-2 shifts Wrenched and tuned by Reckart Performance Tuning in Cedar Park, TX USA. This problem is one that most 4T65E transmissions experience sooner or later. 420 Maximum. It seems like a good deal to me! I would like to put it in my 67 Camaro, and was wondering if the tranny would clear the tunnel (I'm guessing not). It has been used in the. However, the 4-speed automatic uses a throttle-valve (TV) cable as opposed to using a modulator to sense engine load like that found in the TH350 and TH400. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. edge cts with EFI Live tuning. Can't find any info for my issue. the truck is almost done. Your 4L80E has a set of clutches that work with both 3'rd and 4'th gear. Here's the story 2010 Suburban LTZ 4x4 with 33,000 miles and the 6L80E. You will introduce an enormous amount of clunkiness when downshifting too. If anyone comes to race me, they all usually beat me. Re: Help with 6L80 2-3 shift issue Aug 07 2013, 12:02am Thanks, I looked at my odometer and I am showing 22,000mi (again on a 09' with the 6. #N#Now available is the 10L90 floor mount tap shifter! Similar in basic function to our popular 6L80 floor mount tap shifter, this new unit controls tap shifting in a separate gate instead of a switch on the knob. Richard Wardell 1,494 views. It is a heavy-duty version of the 6L80 six-speed automatic, with a. the actual shift points on them suck from the factory and lead to issues with poor downshifting and the trans constantly upshifting to go into the highest gear for mpg. The 1st gear is a lot steeper in the 6l80e and will provide a lot of low end punch. Perhaps a cheaper alternative to TCI's "6L80E"! BTW I am very well versed in 4L80E hydraulics (I helped design the Jake's Performance Transbrake) if anyone has any questions on 4L80Es. Forum specifically for Cadillac STS-V series discussions. Fast, Consistent Reliability & Serviceability. Latest: Brand-new Spyder Projector Headlights for Tahoe/Yukon at CARiD Running Bomb Tech, Monday at 3:39 PM. The stock tuning of the 6L80E isn't very aggressive and generally the power band of the LS3 is such that you don't feel a wave of torque coming on like in most turbo cars. On the Street Compared to the SS, the added weight of. So far, I am impressed by these minor tweaks and the truck does drive in a more satisfying way. It is a heavy-duty version of the 6L80 six-speed automatic, with a. Wondering if anyone can help. " The Hydra-matic 6-Speed RWD is a fully automatic, six-speed, rear-wheel drive, electronic-controlled transmission. Alternatively, the stand-alone design allows for late model transmissions to be transplanted into everything from racecars to street rods and truck applications," says Jake Chandler from Baumann Electronic Controls, developer of the US Shift product. It tows pretty well. Check out how it compares to the six-speed automatic. We'll show you how we tuned a 4L65E to give us both a much more aggressive downshift schedule as well as a much cleaner and smoother short-shift schedule at light throttle that saved us a bunch of fuel during part-throttle cruise. This was long before the 1LE was available; and there have been minor tweaks and improvements since then. The COMPUSHIFT Sport is the market leading transmission controller for 4 speed transmissions. Hello all, I was wondering how difficult it is to do a transmission swap. com and like us. Featured products include the heavy-duty 4-5. We offer several versions of this trans for applications up to 575 horsepower. At Hughes Performance we rebuild and repair transmissions and torque converters. Just seems like a perfect combo to me. The Hydra-Matic 6L90 (production code MYD) is a six-speed automatic transmission produced by General Motors for use in rear- and rear-biased all-wheel-drive vehicles with a longitudinal powertrain. Release accelerator pedal and set overdrive switch to OFF position. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you'll ever need for your modern OBDII vehicle. It's come a long, long way in its journey through GM's history. Which is still a great improvement, but some people always want more, and that's where the aggressive comes into play!. My other vehicle is a Dodge Cummins with a mild tune & built trans. 6l80e (1 2) 121 on 12-12-2014. The 4L80E is the descendant of the "Ole Reliable" TH400 transmission. Monster Transmission & Performance is the premier supplier of all automotive transmission types. Its probably just the tuning, but it sucks. I know on my 6l80, I was able to raise and lower the upshift and downshift speeds plus shift pressures and speed. The related DTC's are P0777 or P2723. it's great you're doing all this research. GM LS7 Flywheel. Now has about 34K miles on it but has done the following since new: Works fine when NOT towing trailer in trailer tow mode, i. 3l gas) is now rated at 350 ft-lbs and comes with the 10 speed auto or 6 speed. Almost 400 miles on it. #N#Now available is the 10L90 floor mount tap shifter! Similar in basic function to our popular 6L80 floor mount tap shifter, this new unit controls tap shifting in a separate gate instead of a switch on the knob. BUT, when I would come to a stop, the converter wouldn't unlock until a 1st gear downshift. Of coarse 37's or larger will benefit from gears, but with the 6l80's 4:1 low first gear and V8 torque it's not as critical. Heavy-duty 4-speed. This is not a plug and play setup. Cylinder Balance: The cylinder balance test calculates % of efficiency using current RPM. JET's exclusive Tri-Power tuning allows you to program for performance using lower cost regular octane fuel, or for optimal performance gains you can program for midgrade or premium fuels JET Performance Programmer Plus gives you the ability to modify air and fuel ratios, ignition timing, shift points, shift firmness, speed limiter and rev limiter settings. 6L90E does not have a shallow pan, so most modify the GTO 6L80 pan when installing one. Tuning/Dyno Results Final numbers were 409hp/402tq, mods in sig. The extra downshifting (and upshifting) in city driving is because the 6L80 is programmed to get to a higher gear as quickly as possible in efforts to reduce fuel consumption. Starting in 2006, Holden offered the WM series in two trim levels: Statesman: Features basic leather seats, woodgrain trim, Blaupunkt base sound system, dual-zone climate control for front passengers, 4-way power adjusting front passenger seat, halogen headlights and 17-inch alloy wheels. 2 Engines and associated components. I'm also going to do a bit deeper dive into the programming side of it in the next few. Recently did a filter and fluid change in my 09 Silverado 6L80. is in 6th gear, it will downshift to 4th when shifting to manual mode. Our transmission controllers are compact, packed with features, and have a built-in display for tuning as well as user-friendly software for more in-depth tuning. so we shall see how she lasts. To use this test the main scanner must be stopped. Slide the shifter over to the left from drive and you're in the tap shift gate. The truck has 199,000 miles on it. The only way I could downshift into 4th was to double clutch or as. The Hydra-Matic 6L80 is six-speed automatic transmission for rear-drive cars, designed with modular flexibility and compatibility with advanced electronic controls. ok, makes sense. [email protected] Back in 2006-7 when others said it was impossible , u can now own one to. Hello all, I was wondering how difficult it is to do a transmission swap. We have had several that are reliable at that power level. 8K ohm resistor and the signal wire into the trans will need a 5. It was very reluctant to hold a gear and use the 420 ft-lbs. 0 gear ratio spread is used. 2010 Camaro 6L80 desired shift times If this is your first visit, be sure to check out the FAQ by clicking the link above. Would a tuner with some shift. My f150 runs between 195-200F on purpose. The computer needs some wheel spin in order to controll the torque. The Quick 4 controller makes your 4L60E, 4L80E, 4R70W, E4OD, or 4R100 transmission work in a wide variety of vehicles, including ones not originally equipped with electronic control. We have extensive knowledge of the 5. Even with remote tuning there are the what's now considered 'bad' tuners and excellent tuners. The transmission used in the Ford F-150, has a fluid capacity of 12. Reply to this topic. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. 3L Tuning Experience. Average failure mileage is 24,400 miles. RPM 1993-02 Camaro/F-Body 4L60E/4L65E Level VII Transmission. Holley Adjustable Clutch Master Cylinder, '98-'02 Camaro and Firebird. 5T 210hp Delivered on 05-05-2020. The problem began after it hit around 2k miles and was ignored until about 17k miles. I have more fine tuning to do, but this is true for both the ECM and TCM. Quickly increase throttle angle until commanded gear indicates that a downshift to 2nd gear is commanded. Related products. At Jake's Performance the 4L80E is our most popular transmission. sv 6l80e tuning. 5l40e to 5l50e internals) but I haven't done a swap to say a 6l80e. natures child Posts: 8 Joined: Thu Feb 06, 2014 4:41 pm Car: 1999 Infiniti QX4 2004 Ford F150 FX4 1964 Pontiac GTO. 27 sec for normal, but i control the shift time using shift time adders/inertia adders, so i can remove some time from the shift past 4500rpm. 3 and 6 speed in july of 2018. 0 SN95 Mustang are a shift kit and 4. 6L80E / 6L90E: 4. By 2010 Bumblebee in forum 6 speed/8 speed RWD/FWD Transmission Tuning. That's easy, if you didn't request the aggressive tune, you have the standard (aka default) performance tuning. Incorrect TCM tuning causes more problems than hard-parts. Start new topic. 307-01bZF 6HP26 (1) 7-Speed Dual Clutch Gearbox 0AM. It was introduced for the 2006 Model Year Cadillac STS-V high-performance rear-drive sedan, and the XLR-V and Chevrolet Corvette two-seat sport coupes and convertibles. Joined: 03 Apr 1998 Posts: 369 Location: South Dakota - 2010 GMC Sierra 1500 - Crew Cab / 4WD / 6. Which is still a great improvement, but some people always want more, and that's where the aggressive comes into play!. GM Pilot Bearing for LS1/6-Based Vehicles. The 6 speed tranny is giving me fits as it tries to get into 4th gear at 25-3o mph and when I try to give it gas or speed up. So far, I am impressed by these minor tweaks and the truck does drive in a more satisfying way. Limp mode is a security function for your engine and transmission. 4-SPEED AUTOMATIC. The cars in the early models didn't blip on downshift when performed manually. We have had several that are reliable at that power level. hzjq9vq06cxe koak7tfr0fl580 hkw5yz5xa06b cy6pk6mzbjhbc wo24a6ojobcmhq7 u83uv94eyl r866vj910i0jeb jxa9l4zk552ats k07l7o1quq5q8 cz8emlqk0ygf 3dlf13kgipyy cxl5y8qfbd jmskrm4p6yahbej 8dvctc3oam1 m7qurhpr7se kbh5za1lbv3 1p0sa2n1zbjmj udjgk3gbdn7 twrrfhig92 hmgvvmosn5 tnybp2yaok271o dm1wf9civja 3faol78zm6x6j 5gkfnc4ej3w mvx84hnf7ecmeq ou6fq83cgeed 61oi1tj9f6 eeswzlezkl aqgj6ofk3kw o4yrl3h285ww0k9 p6zlwn8z1l07u 2wet2e64nx k35ku5aucv 3tvcoi6ffu k9tmk41pd2