chevy avalanche transmission upgrade

The 6l80 was the. Avalanche Performance Chips send your restrictive stock settings packing. x 60 in. 2006 Holden VE Commodore/2008 Pontiac G8 2007-2015 Cadillac Escalade This swap requires minimal fabrication skills and very little in the way of custom modifications. Another benefit of these overdrive transmissions was that they featured a much deeper First-gear ratio, giving improved acceleration off the line. According to repairpal.com, Chevy Avalanches end up at the garage for an unexpected visit about 0.46 times per year. 4L80E Power Tow Shift Correction Kit 1999-2000 GMC K2500 5.7L 4X4 A cracked drum that has failed can create 3-. As car enthusiasts, we talk and link to several services in our industry that are helpful, including Amazon. 4L60-E. General discussions on the 2007-2013 2nd generation Chevy Avalanche on the GMT 900 platform. WARRANTY DOES NOT COVER ANY OF THE FOLLOWING: Round], JEGS 81420 - Rolling Work Table [200 lb. CALL 800-708-0087, Office Hours are Monday-Friday, 9:00am-6:00pm EST. The Richmond five-speed is known as the Street Five-Speed and also uses a 26-spline input and 32-spline output shaft. Msg. Improved throttle response coupled with more power makes driving more enjoyable. If you are looking for aftermarket pans that allow for more fluid capacity, there are plenty of options. We can't answer your question directly, but we may address it in a future story, so stayed tuned. We arent the biggest fan of this for obvious reasons, and neither are many other owners of 6l80e equipped vehicles. Chevy Avalanche's and their transmissions normally have few problems. This 2011 . The Jegs 555-603025 transmission does not fit an '04 4.3 Silverado. Dropped trans in and immediately left for 1800 mile vacation no trouble at all. A larger 6.2-liter V8 is the optional 420 horsepower, 460 pound-feet of torque engine. The 4L85 was never used in a pick up truck. ~TRADE IN SPECIAL AVALANCHE~ This 2010 Chevrolet Avalanche is white with black interior and has an automatic 4x4 transmission, power windows/locks . Other common 6L80E transmission problems include: Early versions of the 6l80 had issues with developing cracks in the 1-2-3-4 piston, and sometimes within the piston itself. BILLET INTERMEDATE SHAFT, Regular Price: $1799.99 Privacy Policy. The cookie is used to store the user consent for the cookies in the category "Performance". OPT 4L60E Stage 1 Valve Body Upgrade Package 4L65E 4L70E Transmission Shift Kit Servo Pistons Plate. Rental cars, loss of work, any labor costs, removal/reinstall fees, towing costs, inspection fees and any other incidental costs or damages which may be associated with product failure. What this means to you is the fact you are getting a quality product that meets or exceeds the OEM standards, not just a part that is taken apart and patched. The transmission fluid chart below shows that even a 25 degree drop from 200 will add another 40,000 miles of use out of our transmission. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. life you can get out of a truck. 4-Speed Automatic Transmission for 5.3L 2007 Chevrolet Avalanche 1500 4x4 Used, Remanufactured, and rebuilt Transmissions available. Chevy Avalanches are known to be fairly reliable trucks, although they do certainly have their defects. 1999-2000 Chevrolet K3500 7.4L 4X4 Built for performance: the McLeod by Raybestos Powertrain 4L60E performance transmission rebuild kit utilizes Stage-1 red friction clutch plate material to deliver the competitive power and performance you need on the street, on the track and off-road. And the same shifter can be used to control either a TH350 or TH400. Transmission randomly pops out of Park with no one in the vehicle. The Avalanche appeared on the Scene for the 2002 model year - there were no 2001's. The very first Avalanches suffered from a transmission problem called a Shell. Updated AC Delco pump cover (stator support), body (bell housing), and vanes with hardened rings, Upgraded line boost valve and slide spring, Performance-tuned solenoid valve body with new ACDelco transmission control module. Roughly $3,000 later and after some very inventive engineering, he was rowing a T56 six-speed in his '69 Camaro (see "Get Six, Pt. Richmond's bad-boy overdrive six-speed is a whole different beast from the rest of the six-speeds on the market. This may sound like a lot to swallow in one gulp, but one astute reader sent us a very detailed list outlining the modifications needed and the costs involved with making his T56 swap a reality. L x 1 in. Swapping from the 4L60E to the 4L80E is not difficult to do in vehicles that were equipped with both transmissions. Spring-loaded bullet ends slide off or develops a burr causing the rod to jam. Burnout after burnout, that thing has taken all sorts of abuse with NO problem whatsoever. 1999-2002 GMC K3500HD 5.7L 4X4 OE quality at an affordable price Direct replacement. The 6L80 is also considered to be sturdier than the 4L80-E. Also read: What Transmission Is In A Chevy Trailblazer? 1999 GMC Yukon K2500 6.5L 4X4 TRG-4L60E-HD2. The 4L60E 4x4 transmission fits 2001-Up GM LS-Series engines. Another common problem seen on most wheel drive cars and four-wheel-drive trucks is that moisture gets trapped on the spline and destroys both the trans output shaft as well as the transfer case 4-wheel drive unit splines. By clicking Accept, you consent to the use of ALL the cookies. 2001-2006 GMC Sierra 2500HD 6.0L 4X4 2011(September)-2012 Holden VE Commodore Series 2(MY 2012) Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Most high performance LS 5.3 LM7 long block engines require a tune, injectors, and are not smog compliant. The high performance steels and clutches included with the HP upgrade are highly recommended for modified vehicles or drag racing applications. Common Chevy Avalanche Transmission Problems. Updated TransGo Actuator Feed Limit Valve (Requires Reaming Tool) As an Amazon Associate we earn from qualifying purchases. In that case, theres an 18% chance the problem youre running into is severe. Had to remember that I wasn't in a race car lol. By far the most common overdrive swap has been replacing a three-speed automatic trans with the popular 4L60/TH700-R4 unit. Some of the benefits of the Richmond six-speed is its light weight (108 pounds) and its ability to use a regular-style mechanical clutch and linkage from an early Chevrolet. . 2001-2006 Chevrolet Silverado 2500HD 6.6L 4X4 4L60E One Piece Case Identification: 93-97. This is due to the constant shutter that the converter sees when DOD is constantly cycling on and off. Return shipping is the same cost as the original shipping charge(shipping cost covers one way). Sonnax high performance products meet the toughest challenges faced by hard-working, daily-use drivetrains as well as racing units going all-out on the street or track. Size: 10.98 X 4.8 X 0.75. Core information: Buyer is required to pay a core deposit UP FRONT in addition to the transmission price. Irregular shifting: sometimes a throttle position sensor or input/output speed sensor fails on the transmission which causes it to develop erratic shifting. We also use third-party cookies that help us analyze and understand how you use this website. 6L80 automatic transmission rebuild kit Fits: GM, Cadillac, Chevrolet, GMC, Hummer, and Pontiac 6L80, 6L80E, 6L80-E, - OPT-6L80-RB . Free shipping for many products! However, it's still critical to remember the Chevy Avalanche years to avoid. Repairs differ depending on the type of cluster and the year range. 1999 GMC Suburban K2500 5.7L 4X4 Our JEGS 4L60E transmission can handle up to 450 HP. On the later versions, hydramatic put an O-ring on the shaft to address this concern. The Chevrolet Avalanche is a four-door, five or six-passenger pickup truck sharing GM's long-wheelbase chassis used on the Chevrolet Suburban and Cadillac Escalade EXT.Breaking with a long-standing tradition, the Avalanche was unavailable as a GMC, but only as a Chevrolet.Production of the Avalanche started in July 2001 [citation needed] and ended April 2013, [citation needed] producing two . Chevy High Performance outlined proper adjustment techniques for the TV cable back in the Mar. The TH350 is a bolt-in replacement for a PG, making this swap a relatively straightforward one that requires no crossmember or driveshaft modifications. Problems / Chevrolet / Avalanche / 2010; 2010 Chevrolet Avalanche Problems. Core must NOT have any hard part, or case damage, otherwise there will be additional charges deducted from your core deposit for the damaged hard part(s) or case. When this happens, it sends TCC clutch material through the transmission cooling system and into the transmission which ultimately leads to failure and the need for a rebuild. As a general rule of thumb, Chevrolet advises you to change the transmission fluid of your Avalanche every 45,000 miles. We ensure that all the current updates are performed, during reassembly each unit is ran through tests to ensure correct assembly and quality. I rebuilt the 4L60 transmission in my 59 Chevy Truck for the first time, on my own, three years ago using every Sonnax component available for my application. According to carcomplaints.com, the worst years for the Chevy Avalanche include: 2002 Chevy Avalanche. II," Feb. '99; "Thrasher," Oct. '98; and "Trans Swapping Tech," May '99) so we highly recommend referring back to those issues for details concerning a T56 swap. Well dive into specific transmission problems shortly, but they dont seem to be the thing that would trouble the Avalanche. Avalanche 2002-2008; Blazer 1993-2005; Bravada 1993-2004; Brougham 1994-1997; Camaro 1994-2002; . 4L80E Power Tow Shift Correction Kit, SRT STAGE III 4L85E There is much custom fabrication work involved in a six-speed swap as well as some additional high-performance hardware that you'll need, including purchasing or fabricating a custom mounting bracket and modifying the stock clutch pedal for the hydraulic-clutch master cylinder, modifying or fabricating a complete transmission crossmember, relocating the shifter hole in the floor of the car, shortening the driveshaft and possibly changing its yoke, and even installing a small-diameter starter and having custom headers built for clearance. Overall Length], JEGS 80006 - 2-Ton Low-Profile Aluminum Floor Jack, JEGS 79012 - Transmission Jack Low Profile 1000 lb Capacity, JEGS 81154 - Lo Boy Creeper 250 lb. If you have any problem installing this transmission, before returning it please call the JEGS technical support line. The JET system will not interfere with any existing computer systems you may have already installed in your vehicle. Automatic Transmission Rebuild Components (104) Transfer Case Components (100) . Thank you guys for supplying awesome quality performance parts. Free Shipping On Powertrain Parts! This is caused by rain water getting into the transmission through the dipstick. This cookie is set by GDPR Cookie Consent plugin. A loud rattling sound when transmission engages reverse. Drive], JEGS 80717 - Standard Thread Gauge [SAE #6-32 thru 1/2 in.-13 and Metric 4 mm x 0.7 thru 12 mm x 1.75], JEGS 72338 - Speed Soap Hand Cleaner, Heavy-Duty Walnut Shell, 14 oz. One part is a completely new aftermarket T56 transmission assembly from National Drivetrain. While it's true all you need is a laptop and an OBD-II connector cable, you will need to acquire the update and use special expensive software. For 2003-2006 and early style 2007 Chevy/GMC clusters, we recommend a full rebuild on our . H x 27 in. This swap is pretty straightforward in any early Chevy, considering that TH400s were optional in most of them. LBRST Headlight Assembly For Chevrolet Avalanche 1500/2500 2002-2006 Black Housing Amber Reflector Clear lens Driver and Passenger Side Headlamp (with Body Cladding Model only) 4.9 (36) $11099. It was shipped out fast and arrived fast. They paid for a rental. 2008-2013 Chevrolet Avalanche, Weight: 195 pounds (Dry), 230 pounds (Filled). Majority of units are in stock, if we do not have one in stock they are quickly available in most case, as little as one day. Due to the issues with body cladding, weak transmissions, and the fact they are roughly 20 years old make the 2001-2002 Chevrolet Avalanches the worst years of the truck. No Problem Posts. Type: Six speed RWD / AWD, electronically controlled automatic overdrive transmission with torque converter clutch. 4L60-E. Perhaps that's due to their weight and high initial cost. Excellent replacement for your worn out or faulty part Designed to restore original performance and reliability. Free In-Store or Curbside Pick Up. It could be internal transmission failure, low transmission fluid, or a faulty Vehicle Speed Sensor (VSS sensor). The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The TH350's steeper First-gear ratio will give you improved acceleration over the two-speed 'Glide. The GM 4L60/E series are great transmissions used for decades in performance vehicles, but their reputation has somewhat suffered because old-school mods never significantly improved durability. Due to issues with the original manufacturing process, cracks and other damage can cause a catastrophic failure of the 4-5-6 clutch pump and intermediate shaft. 1999-2000 Chevrolet K3500 6.5L 4X4 Chevy Avalanche Brakes, Rotors & Pads. . This switch unlocks the converter if the engine is making less than 8 inches of manifold vacuum. Condition : Excellent. The first sensor only engages the lockup clutch in Fourth gear, as a computer-controlled vehicle would. Whether your performance passion is street style, road racing, off road or anything in between, Chevrolet Performance has the upgrades to take your Corvette, Camaro, truck or SUV to the next level. Aerosol Can], JEGS 72327 - Performance Hand Sanitizer [2 oz. GearStar Performance Transmission National Powertrain Remanufactured Automatic Transmission Assembly T260061. 320-hp V-8. Transmission filter kits for the 6l80e are very inexpensive and simple. It is ideal if you're replacing a TH350 or Powerglide trans because a TH200-4R will practically install itself into a TH350/Powerglide-equipped car. For those that do know that this spot is designated for a GM transmission temperature gauge, they might not realize that all full size GM vehicles (Silverado, Suburban, Tahoe, Sierra, Yukon, Avalanche, or Denali) already have a transmission temperature sensor . In addition, it allows backshifts to 3rd, 2nd & 1st by moving the lever. Borg Warner Carbon Lined Reverse Band GM had a good idea when it installed lockup torque converters in the overdrive automatics. This is one of those stories that you'll want to add to your ever-expanding files of Bow Tie knowledge. Chevrolet Performance Vehicle Upgrades. Includes a datalogger that you plug into the OBD2 for us to analyze and optimize . Because of its ability to be used on a number of different platforms, the 6l80e transmission was found in a many GM vehicles from model years 2006 2021 ranging from sports cars to full size pick up trucks. Find many great new & used options and get the best deals for Chevrolet Avalanche 1500 Automatic Transmission OEM 126K Miles (LKQ~341359551) at the best online prices at eBay! 1999-2000 GMC K3500 5.7L 4X4 2001-2006 GMC Sierra 3500 6.0L 4X4 2010-2015 Chevrolet Camaro -Reverse clutch problems. RWD or 4WD. Bought this 2 months ago. Case Material: Aluminum . UltraPower 8.1L ECM Benefits: Fuel mileage improvement of up to 1 MPG. The rear mount on the Richmond six-speed will require a custom-fabricated crossmemberinstalled approximately 6 inches farther backor it's often possible to relocate the existing crossmember rearward. The 4L60-E is a transmission thats good or bad, depending on the vehicle that you own. Aux Transmission Cooler Upgrade & Relocation. The transmission lost 2nd and 4th gear; the truck had about 30,000 miles at the time. Any product used in an improper application, abused or not used in connection with the proper parts. Who has the most miles on their 07+?? Chevy Avalanche 2022 Engine Performance. Feel free to write in with questions concerning your particular swap. If you have a deeper aftermarket transmission pan on your 6l80e, then this quart estimate will likely be more and require you to check fluid levels as you fill and run the transmission through the gears. Its wiring harness has a built-in diagnostic port that will allow the connection of the modern scanning electronics present in any Chevrolet dealership's garage to track down and diagnose any transmission-related problems. On the newer trucks however, you have a joy of dealing with the exhaust y-pipe not giving you enough clearance to drop the pan without some clever methods or loosening the exhaust which may be a pain in its own right. 2007-2009 Cadillac STS-V, STS *A Non-DOD Cam is required *Aftermarket Camshafts available. Some cars that used the 4L80E transmission include Chevrolet/GMC pickups, commercial vehicles, and vans. Capacity), JEGS W2450 - LED Flashlight [Super Bright], JEGS 65010 - Fender Cover with Pocket [23 in. These cookies ensure basic functionalities and security features of the website, anonymously. These problems can be costly and even dangerous as you drive on the road. 1999-2002 GMC K3500HD 7.4L 4X4 The easiest cure is to fabricate a steel or aluminum spacer to raise the back of the trans and slip the spacer in between the mount and the transmission to give it the necessary clearance (see photo). Transmission Cooler Guide participates in the Amazon Associates program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Transmission Cooler Guide - Copyright 2022, Since the 6L80 transmission is used in all GM 2wd and 44 cars and trucks, it was bound to have problems with various platforms. $ 2,049.99. What this means to you is the fact you are getting a quality product that meets or exceeds the OEM standards, not . 2006-2009 Cadillac XLR-V My truck only had a 36,000 mile power train warranty. The Chevy Avalanche has been rated as one of the Top Large Light Duty Pick Ups by JD . Chevy Avalanche 2500 2004, High Performance Automatic Transmission Rebuild Kit by Transtar Industries. 4 Koleene Intermediate Steels The TH200-4R has been available almost as long as the TH700-R4 but is unanimously overlooked as a performance transmission option. The perfect upgrade for more holding power without excessively harsh shifts. If you do so, you can expect the transmission to last at least 200,000 miles, with a maximum of 300,000 miles depending on the conditions. This is a truck you need to know more about. 2001-2003 Chevrolet Silverado 1500HD 6.0L 4X4 Drivetrain : 4WD. # mpn4713583226. In 1996, a bolt-on bell housing was phased in (along with a six-bolt tailhousing) for S-10 Trucks and S-10 . The Transgo 4L60E-HD2 is meant for crisp muscle car or full race shift performance. 4 Koleene Intermediate Steels, SRT STAGE II 4L80E Some 6l80 builders may weld the cracks, but that isnt a permanent solution. Bushing Kit Universal kit made from high-strength alloy eliminates spline twist and wear. However, what type of transmission fluid you should use depends on the transmission that you have. Lets start with the difference between the 4L60-E and the 4L80-E. Depending on the age of your engine, the factory mile per gallon specs ranged from 13-17mpg for city and 16-22mpg for highway driving. Is a Transmission Tune up Necessary for My Cars Performance? When dropping the transmission pan to perform a standard drain and fill transmission fluid change, you can expect to replace around anywhere from 4-6 quarts of fluid assuming the stock transmission pan is being used. Get Your Car Fixed. If you're deadset on a first-generation Avalanche and are into the body cladding, we'd recommend going for a 2003-2005 model. 1999 Chevrolet Suburban K2500 5.7L 4X4 1999-2000 Chevrolet K2500 7.4L 4X4 Check if this fits your Chevrolet Avalanche. 5 Koleene Forward Steels But there were also worrying issues with the models. JEGS 82514 - Torque Converter Bolts For GM TH200, 700R4, 4L60, 4L60E & 4L80E, M10-1.5 x 15 [Set of 3], JEGS 28070 - Quick Shift Automatic Transmission Fluid [1-quart], Dana Spicer 2-3-12051X - Transmission Slip Yoke 27 Spline x 1.176" Diameter, MSD Ignition 2760 - Atomic Transmission Controller for Late Model GM/Ford, First Gear Ratio (Automatic Transmissions). Some parts are not legal for use in California or other states with similar laws / regulations. The fluid stays in the transmission until the thermostat opens up then will flow to the cooler. Yesterday at 11:26 PM; Auto Parts Guy; Chevy Avalanche Audio/Video & Electronics. Wash hands after handling. The other switch gets connected to a ported vacuum source and measures engine vacuum. Chevrolet. Our list of 7 known complaints reported by owners can help you fix your 2010 Chevrolet Avalanche. L99 can use standard L92 valley cover if you reuse the factory L99 PCV system. 2001-2003 GMC Sierra 1500HD 6.0L 4X4 2023 Shift Rite Transmissions | Designed by Cloud Nine Web, 4L80E 1999-2009 4X4 TRANSMISSION 5.7L 6.0L 6.5L 7.4L 8.1L, Updated TransGo Actuator Feed Limit Valve. This is the easiest way to identify it. All of our transmissions are fully remanufactured and are held to the highest and strictest industry standards. # mpn4958781044. While many GM trucks come factory with an external cooler, it is not big enough to provide the cooling needed . Weight: 195 pounds (Dry), 230 pounds (Filled) Gear Ratios: 1st Gear: 4.03:1; . Our high-performance transmissions including GM 6L80 (level 1 and 2) and GL90 are built to the horsepower, torque, and rear gear ratio specs of the engine that it will be matched to. Our repairs for the Chevy Avalanche dash panel covers issues with faulty gauges, burnt out lights, digital odometer and PRNDL display issues, power loss, and occasionally battery drains. Below is a detailed video of performing a transmission fluid change on a 6l80e in a Chevy Silverado. It was also adopted in Rolls Royce and Bentley vehicles. New Solenoids Give your Avalanche the forceful and quiet sto pping power it needs with our durable brakes, r otors and brake pads. Any product that has been physically altered, improperly installed or maintained. How to Repair a GM Instrument Cluster at Home - Speedometer and All Gauges. This was a beefed up version of the 4L80 and it was used in the Avalanche and Suburban with the 8.1 engine only where the Allison was too big to fit. This transmission comes with a 1 Year 36,000 Mile Warranty with the purchase of a new torque converter. Material: Cast Aluminum. Only the Richmond four-speed trans is a direct-fit replacement for the '71-and-later Muncie and Super T-10 transmissions using the same 26-spline input and 32-spline output shafts. The 6l80e takes Dexron 6 (Dex VI) transmission fluid and has a 11 13 quart dry fill capacity including torque converter. All Rights Reserved. Question type: Maintenance & Repair. The most common simple DIY 6l80e upgrades that can be done with simple hand tools in your driveway without removing the transmission to tear apart are definitely transmission coolers, pans, and thermostat bypass. 2006 Holden/Chevrolet WM Statesman/Caprice Today, the three-speed automatic transmission is extinct and all new GM cars and trucks come with overdrive four-speed automatics, making them easy to find and relatively affordable. Premium Clutches. Clutch-to-clutch architecture, with integral Electro / Hydraulic Controls Module . From street/strip upgrades and heavy-duty jobs to top-tier racing builds, Sonnax makes it easy to deliver rock-solid transmissions customized for any performance level. Engineered to Dominate, the 4L65E 4WD Mega Monster transmission is tough enough to withstand the rigors of even the toughest heavy duty trucks, used for towing/hauling or off-roading. Today, we will talk about the two generations of the Chevy Avalanche and give you an overview of what transmissions are actually used in this vehicle. IF a 6l80 is ever taken apart for a rebuild, its generally best practice to consider replacing the drum with a stronger aftermarket unit. Im an active writer on this blog myself, as well as a novice car mechanic. Chevy Avalanche 4L60-E Transmission 2007, Hi-Tek Transmission Oil Pan by B&M. Updated Bronze Thrust Washers (Replaces OEM Plastic Washers) Overheating: overheating is another symptom that can sometimes occur (especially when towing heavy loads). Texas Speed & Performance DOD / AFM Delete Kit for 5.3/6.0/6.2 Engines. LS Truck, Heavy Duty,Performance, Safety Upgrade, Urethane/Steel, Black powdercoat, Pair. This has a clean title and is priced to sell. Chevy Tahoe Transmissions: Overview, Problems, Fluids. Description of this Chevrolet Avalanche 4WD Crew Cab LS. The stock console shifter that controlled the PG will work with the TH350 as well, but you may want to replace the stock indicator bezel with one from a TH350- or TH400-equipped car to keep track of what gear you're in. 1999-2002 Chevrolet K3500HD 7.4L 4X4 You'll find this generation in model yea. In all actually, the hardest part of the job is draining the fluid from the pan if your pan doesnt have a drain plug in most situation, which is quite common with more transmission fluid changes. Bonded Pistons When changing from a PG/TH350 to a TH400, the stock trans crossmember will need to be moved back several inches to align with the TH400 trans mount. $ 2,674.99. TSB 05-07-30-017B - Water contamination - Chevy Avalanche 4L60E. Used. A TH350/PG slip-yoke will work with the TH700-R4 trans, but a TH400's will not. Centerforce has come to the rescue and offers a clutch, flywheel, and pressure plate made to adapt this trans to early, two-piece rear-main-seal small-blocks. Spray Bottle], JEGS 80971 - Drip Mat 32 in. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. The chart below shows how transmission fluid looks at various stages. Finally, well look into the common problems of each type of transmission. The original TH350 and PG driveshaft won't need to be shortened because it's already the correct length, but you must replace its slip-yoke with a 32-spline unit from GM (PN 14075214). Youll need new pistons and a clutch pack to replace this. 0. 5 PINION FRONT PLANETARY & 5 PINION REAR PLANETARY (4L85E), SRT STAGE IV 4L85E In this case were talking about a broken drive shell which will need to be replaced. View Specification. Series : 4WD Crew Cab LS Pickup. 2002-2006 Chevrolet Avalanche 2500 8.1L 4X4 One such swap involves installing a Richmond four-, five-, or even six-speed manual transmission. Chevy Avalanche 2006, Automatic Transmission Oil Cooler by TYC. Developed in-house by General Motors, the Hydra-Matic 6L80 is part of the 6LXX family of fuel-saving, electronically controlled six-speed automatic transmissions that succeeded the 5LXX family. The first difference is that the 4L80-E has a Gross Vehicle Weight of 8,000 pounds, whereas the 6L80 maxes out at 8,600 pounds. Buy your 4L60E 4x4 performance transmission online. Some 6l80 builders may weld the cracks, but that isnt a permanent solution. All T56 transmissions installed in late-model cars use an electronic pickup to measure speed, but National's T56 is designed to use the standard speedo cable and T5 manual transmission's drive and driven gears. The 6L80 denotes that the transmission is a 6-Speed, Longitudinally mounted, and for 8000 lbs. 1999-2002 Chevrolet K3500HD 5.7L 4X4 Chevy High Performance has covered the transplant of GM's T56 six-speed manual transmission into early Chevys in several stories (see "Get Six," Sept. '98, and "Get Six, Pt.

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