Most aftermarket deep 6l80 pans are made from a heavy duty cast aluminum, and typically provide an extra 2 quarts of fluid capacity or retain the factory fluid levels but provide added strength. Find many great new & used options and get the best deals for For Chevy Avalanche 1500/2500 2002-2006 Automatic Transmission Oil Cooler Black at the best online prices at eBay! However, that doesnt tell the whole story. The 6l80e takes Dexron 6 (Dex VI) transmission fluid and has a 11 13 quart dry fill capacity including torque converter. A larger 6.2-liter V8 is the optional 420 horsepower, 460 pound-feet of torque engine. As a general rule of thumb, Chevrolet advises you to change the transmission fluid of your Avalanche every 45,000 miles. Overheating: overheating is another symptom that can sometimes occur (especially when towing heavy loads). This issue can obviously cause a number of serious drivability issues. 2007-2009 Cadillac STS-V, STS Came packaged good and Performs better!! To make that task easier, JET Performance Products now offers a stand-alone computer-controlled system that will operate a 4L80-E transmission behind any carbureted or fuel-injected engine. Assume those links are affiliate links which means we may earn a commission if you click and buy. For a typical pan drop and fluid change, you will need about 5-6 quarts to do the job. 2000-2007 GMC Yukon XL 2500 6.0L 4X4 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. A familiar 5.3-liter V8 will be a standard engine and produce 360 horsepower and 390 pound-feet of torque. Sonnax HD Forward Clutch Hub Swapping from the 4L60E to the 4L80E is not difficult to do in vehicles that were equipped with both transmissions. 485 North Hobbie AvenuePost Office Box 1782Kankakee, Illinois 60901, My AccountShopCore ReturnsAboutRefunds & ShippingPrivacy PolicyTerms of Use. Chevy Avalanches are known to be fairly reliable trucks, although they do certainly have their defects. Apart from General Motors, we also offer top-quality Ford and Mopar transmissions. 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. Chevy Tahoe Transmissions: Overview, Problems, Fluids. GearStar Performance Transmission 1999 GMC Suburban K2500 6.5L 4X4 Capacity, JEGS 81156 - Mechanic Chair & Step Stool on Wheels (300 lb. Msg & data rates may apply. If your flexplate has only one bolt circle, you'll need a dual-pattern replacement, readily available for all Chevy V-8s from sources such as ATI, TCI, and Pioneer. 2008-2009 Hummer H2 1999 GMC Suburban K2500 5.7L 4X4 The purpose of the lockup is to couple the engine directly to the transmission's output shaft in Fourth gear for the best fuel economy. But there were also worrying issues with the models. The Richmond five-speed is known as the Street Five-Speed and also uses a 26-spline input and 32-spline output shaft. 0. This transmission shifts like a dream. 2011(September)-2012 Holden VE Commodore Series 2(MY 2012) Reply HELP for help or STOP to opt out. The 4L60-E can carry a Gross Vehicle Weight of 6,000 pounds, whereas the 4L80-E can carry a GVW of 8,000 pounds. To pre-program cluster you must provide current mileage, vin and matching OEM number; With 6 gauge cluster. The Jegs 555-603025 transmission is warranted for 1-year from date of purchase regardless of installer. UltraPower 8.1L ECM Benefits: Fuel mileage improvement of up to 1 MPG. Or maybe it's because they're hard to find used in the scrap yards and many people don't want to add a computer just to control the transmission. . This is due to the constant shutter that the converter sees when DOD is constantly cycling on and off. 6 Direct Clutches and 6 Koleene Steels (1 Additional Direct Clutch using forward steels) 4 Koleene Intermediate Steels The Hydra-Matic 6L80 (production code MYC) 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 orientation. Lets start with the difference between the 4L60-E and the 4L80-E. Build a KILLER 4L60/E or 700-R4 with Sonnax Build Guides. Free Shipping On Powertrain Parts! This 4L60 transmission includes the bolt-on bell-housing to fit GM LS-Series engines (Pre-LS engines should use transmissions 555-603010 or 555-603015). The price match guarantee does not apply to refurbished, closed, or close out sales. Many owners do not know what the mysterious missing gauge should be on their 2003-2006 GM instrument cluster or the significance of it. If you're replacing a TH350 trans, you can relocate the factory crossmember mounting holes rearward approximately 1 inches or swap in an original TH400 crossmember. 2002-2006 Chevrolet Avalanche 6.6L 4X4 Transmission also plays a part, with 6-speed autos performing better than 4-speeds. If you are looking to get the most of your vehicle with 6L80E /6L90E transmissions and considering a major trans upgrade, Gearstar has the best products available on the market. Thanks for your message! Upon removing the transmission to change the filter, or doing any service to the transmission requiring a refill of the fluid, vehicle not wanting to move or engage the transmission in any range. Accessories, TCI 371416 - GM Maximizer 4x4 Transmission, TCI 371430 - GM Maximizer 4x4 Transmission, Please click here to download the instructions PDF file, BMR Suspension TCC024H - Transmission Conversion Crossmember 1984-92 Chevy Camaro & Pontiac Firebird, BMR Suspension TCC030H - Modular Transmission Conversion Kit 1967-69 Chevy Camaro & Pontiac Firebird, FAST 30282-KIT - EZ-TCU Transmission Controller GM Overdrive Up-To 2009, Hooker Headers 12625 - Blackheart LS Engine Swap Transmission Crossmember, Chevrolet Performance 19302405 - SuperMatic Transmission Controller Systems for 4L60-E with LS Engines, TCI 302820 - EZ-TCU Control Unit 2009-Down GM 4L60E, 4L65E, 4L80E, 4L85E Transmissions, JEGS 60129 - Flywheel and Flexplate Turning Tool, JEGS 81432 - Transmission Teardown Work Station [1/2-Ton Capacity], JEGS 28071 - Quick Shift Automatic Transmission Fluid [1-gallon], Lisle Tools 23400 - Transmission And Transaxle Plug Set, JEGS 60308 - Transmission and Transaxle Stepped Plug Set, JEGS 22010 - Transmission Guide Dowels 3" Long with Tapered Shape & Slotted Head, JEGS 72312 - Brake and Parts Cleaner [14 oz. This can lead to transmissions running hot and living a short life behind a powerful engine. for most trucks 200,000 miles is about the general. For 2003-2006 and early style 2007 Chevy/GMC clusters, we recommend a full rebuild on our . Aerosol Can], JEGS 72327 - Performance Hand Sanitizer [2 oz. Starting in the 2006 model year, General Motors released the6L80E and 6L90Etransmissionsthat developed several issues that tend to frustrate transmission as well as body shop technicians servicing them globally. 1999-2000 Chevrolet K3500 5.7L 4X4 6 Direct Clutches and 6 Koleene Steels (1 Additional Direct Clutch using forward steels) 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. Chevy Avalanche 2006, Automatic Transmission Oil Cooler by TYC. We can't answer your question directly, but we may address it in a future story, so stayed tuned. This swap requires minimal fabrication skills and very little in the way of custom modifications. When you make a better shell, the splines just rips off the end. 2010-2015 Chevrolet Camaro 75. . 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 TH700R4 was renamed "4L60" (RPO MD8) following the new General Motors naming convention when the electronic version, 4L60E (RPO M30), was phased in as the 4L60 was being phased out.This happened in 1993 for trucks, vans, and SUVs, and 1994 for rear wheel drive passenger cars. 2001-2006 Chevrolet Silverado 2500HD 6.6L 4X4 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. Only 7 left in stock - order soon. 2009-2013 Cadillac CTS-V (6L90) : In this tutorial you'll learn how to repair a sticky, stuck, jumpy or dead GM speedometer, tachometer, fuel gauge, oil pressure gauge, volt meter, water temperature gauge and . The transmission can also be used in an older vehicle when converting to an electronically controlled overdrive transmission. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The plucking rod actuator assembly GM part number 24200173 has been known to fail and cause most of these concerns. Reman Pump with New Rotor Vane Slide and Stator Support, loc_en_US, sid_10001_10001_3126190, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)], loc_en_US, sid_10001_10001_3126190, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]. (+Reliability Scores). Chevy Avalanche Gas 2007, Transmission Pan by aFe. 6 Direct Clutches and 6 Koleene Steels (1 Additional Direct Clutch using forward steels) 4.64 out of 5 stars. Buy a new or remanufactured engine, transmission, or transfer case and we'll ship it directly to your front door.for FREE! The TH350 is a bolt-in replacement for a PG, making this swap a relatively straightforward one that requires no crossmember or driveshaft modifications. These problems can be costly and even dangerous as you drive on the road. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. You'll find this generation in model yea. Our Process: All of our transmissions are fully remanufactured and are held to the highest and strictest industry standards. The Richmond Street Five-Speed is not an overdrive trans and can only be ordered with a 1:1 Fifth-gear ratio. The 6l80 normal operating temperature is in the 180-200 range when fully warmed up, and this based on the thermostat that prevents transmission fluid from running through the whole transmission cooling system in an effort to improve gas mileage. We recommend mocking up your installation with the TH700-R4 trans in place and then taking measurements to determine how long your new driveshaft will need to be before having it cut. Remanufactured. While the engineering behind this is sound, the logic is somewhat questionable. The transmission control module (TCM) is updated and recalibrated to the latest OEM calibration. Furthermore, if you fail to update properly, the vehicle will literally not start. $1,000 minimum purchase. . 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. WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Also, read Chevy Tahoe Transmissions: Overview, Problems, Fluids. The next easy swap involves replacing either a PG or TH350 with the bigger, stronger, and heavier TH400. All Rights Reserved. Warranty: I know the engine. The only thing you can do here is make sure that theres enough transmission fluid in the transmission. Great trans shift crisp and can hold some power works great with my tci converter, Bought this a month ago the transmission pad leaks so have to buy a new one just keep putting grant fluid in until I can change it. 4 Koleene Intermediate Steels, SRT STAGE II 4L80E The cookies is used to store the user consent for the cookies in the category "Necessary". 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. Find a high quality auto repair shop or dealer near you . 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. We arent the biggest fan of this for obvious reasons, and neither are many other owners of 6l80e equipped vehicles. Youll need new pistons and a clutch pack to replace this. x 60 in. 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. 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. 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. 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. BILLET INPUT SHAFT 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. Any product that has been physically altered, improperly installed or maintained. 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. This transmission comes with a 1 Year 36,000 Mile Warranty with the purchase of a new torque converter. Some parts are not legal for use in California or other states with similar laws / regulations. This truck was babied. From the options with Chevy Avalanche mods to the distinct chassis setup, these big trucks are worth bragging about. 1999 Chevrolet Suburban K2500 6.5L 4X4 Very Grateful Jegs did a good job even with this pandemic going on. The Jegs 555-603025 transmission will fit a '99 Silverado. It does require that the clutch be converted to a hydraulic pull-off design using a hydraulic master cylinder and remote fluid reservoir. The cookie is used to store the user consent for the cookies in the category "Analytics". Torque Rating: 664 ft lbs. 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. Includes a datalogger that you plug into the OBD2 for us to analyze and optimize . What Transmission Is In A Chevy Trailblazer? SKU # 327358. Black, JEGS 65014 - Protective Mechanics Seat Cover [52 in. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles. The cookie is used to store the user consent for the cookies in the category "Other. Find 2007 CHEVROLET AVALANCHE Parts and Accessories and get Free Shipping on Orders Over $99 at Summit Racing! Below is an example of a factory truck pan that does not have a drain plug. Drive], JEGS M200DB - Torque Wrench 1/2" Square Drive 10 to 150 ft/lbs, JEGS 28084 - Blue Bolt Locker Medium Strength, JEGS 80080 - Round Magnetic Parts Tray [5 1/2 in. Another benefit of these overdrive transmissions was that they featured a much deeper First-gear ratio, giving improved acceleration off the line. 2014-2017 Holden VF Commodore / Chevrolet SS This 2007 *Chevrolet* *Avalanche* *LS 1500 4dr Crew Cab 4WD SB* Is Detailed and ready for a Test Drive!! But opting out of some of these cookies may affect your browsing experience. Bushing Kit Matt Dinelli and his team at Attitude Performance in Arlington Heights, Illinois . 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. 2001-2006 GMC Yukon XL 2500 8.1L 4X4 Series : 4WD Crew Cab LS Pickup. $144.75 $ 144. Spray Bottle], JEGS 80971 - Drip Mat 32 in. However, there are some elements you should look out for. '99 issue in a story titled "Hard Hittin' Shiftin'" on page 66. The 2005 Chevrolet Avalanche has 13 problems reported for transmission failure. Msg. 2006-2014 Chevrolet Corvette (+Reliability Scores), How Many Miles Can A Subaru Impreza Last? 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. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. 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. According to repairpal.com, Chevy Avalanches end up at the garage for an unexpected visit about 0.46 times per year. If you've installed your overdrive and the trans won't shift right, read that story and check out your adjustment. If you happen to have a . Check out these handy build guides to get maximum results out of your rebuild! We ensure that all the current updates are performed, during reassembly each unit is ran through tests to ensure correct assembly and quality. L99 can use standard L92 valley cover if you reuse the factory L99 PCV system. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. 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. Ramp Up from OE Wide Ratio to Race-Ready Close Ratio, Upgraded Housing Eliminates 3-4 Clutch Failure. 4L60E 2007-2008 2WD TRANSMISSION 4.8L 5.3L. Home Delivery. 4L60E Transmission for 2001 & Up GM LS Engines 4WD Truck. EBC Brakes; Flowmaster; K&N; Magnaflow; . Complementing your Chevrolet Performance crate engine with a factory-engineered new or remanufactured performance transmission is a cinch with our comprehensive lineup of automatic transmissions, torque converters and installation kits. 2002-2006 Chevrolet Avalanche 2500 8.1L 4X4 It was shipped out fast and arrived fast. Yes, in theory, but it's not recommended. Part Number: SUM-7731112. How Many Miles Can A Subaru Legacy Last? J. 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. All pickups, Suburbans and Avalanche with the 6.0 used the 4L80. 2009-2015 Chevrolet Tahoe Purchase the 4L60E transmission from JEGS High Performance today! 2003 h2 hummer. This switch unlocks the converter if the engine is making less than 8 inches of manifold vacuum. We also use third-party cookies that help us analyze and understand how you use this website. 1999-2000 Chevrolet K2500 7.4L 4X4 How to Repair a GM Instrument Cluster at Home - Speedometer and All Gauges. Transmissions | Torque Converters | Transmission Parts |Transfer Cases |All, 1999-2000 Chevrolet K2500 5.7L 4X4 The 3-4 clutch pack is upgraded from 6 to 7 clutches/frictions to increase durability and torque capacity. Universal kit made from high-strength alloy eliminates spline twist and wear. Notable features in 2013: New standard features for the Avalanche's final model year. . Provides for extended drain intervals. 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). The Avalanches are no longer in production, although secondhand units are still available for purchase. The TH400's torque converter features a different diameter bolt circle than the TH350/PG converters, but most GM flexplates are already drilled with the necessary dual pattern. Quantity: 1 Piece. You may have to switch to a dual-pattern flexplate if your car came equipped with the TH400 trans. 5 Koleene Forward Steels Among the Chevy Avalanche years to avoid is the Chevy Avalanche from 2002 through 2008, then from 2009 to 2010. Options: AT, 5.3L, 4x4 Change Options. Six-speed automatic transmission. Availability: 1999-2000 GMC K2500 6.5L 4X4 4L80E Power Tow Shift Correction Kit, SRT STAGE III 4L85E Master Rebuild Kit with all clutches and steels, name brand clutches such as Borg Warner or Raybestos 1999-2000 GMC K2500 7.4L 4X4 This cookie is set by GDPR Cookie Consent plugin. Avalanche Performance Chips send your restrictive stock settings packing. PRICE: 649.99. Well be in touch soon. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. It still runs and works well but I know. Necessary cookies are absolutely essential for the website to function properly. 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. 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. TQ], JEGS 603020 - 4L60E Performance Transmission for 2005 & Earlier GM LS Engines, Hughes Performance GM21LFUEL - Fuel Miser Torque Converter 1982-84 GM TH2004R/TH700R4, Hughes Performance GM22LXTM - XTM Series Tow Master Torque Converter 1985-98 4L60/TH700R4/4L60E, ATK Engines 7204-MB - Remanufactured GM 4L60E RWD Automatic Transmission, JEGS 60414 - Torque Converter for GM 4L80E/4L85E Mounted to an LS Series Engine [2900-3200 RPM Stall Speed], Hughes Performance 53LTOW - Tow Master Torque Converter 1992-On A.O.D.E./4R70W 4-Speed Overdrive, Hughes Performance 22-25L - Street Master Torque Converter 1985-98 GM TH700R4/4L60/4L60E, This Unit only works in vehicles with a 13 Pin wiring harness connector, The Transfer case adapter and shifter bracket are NOT included. The new Richmond six-speed trans comes with its own six-speed shifter assembly that will require elongation of the shifter hole in the floor. CALL 800-708-0087, Office Hours are Monday-Friday, 9:00am-6:00pm EST. Just so there's no confusion about which transmission we're referring to, the 4L60 was the first upgrade made to the venerable TH700-R4. OPT 4L60E Stage 1 Valve Body Upgrade Package 4L65E 4L70E Transmission Shift Kit Servo Pistons Plate. 1999-2000 GMC K3500 7.4L 4X4 General discussions on the 2007-2013 2nd generation Chevy Avalanche on the GMT 900 platform. One such swap involves installing a Richmond four-, five-, or even six-speed manual transmission. Some cars that used the 4L80E transmission include Chevrolet/GMC pickups, commercial vehicles, and vans. Transmission randomly pops out of Park with no one in the vehicle. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Give your Avalanche the forceful and quiet sto pping power it needs with our durable brakes, r otors and brake pads. But by 2011, the year prior to GM's decision to discontinue the vehicle, Chevy Avalanche sales dwindled to a measly 20,088 . 2010-2021 (K2XX) Chevrolet Silverado/GMC Sierra 1500 OE quality at an affordable price Direct replacement. Updated Sonnax No Walk Case Bushing ~TRADE IN SPECIAL AVALANCHE~ This 2010 Chevrolet Avalanche is white with black interior and has an automatic 4x4 transmission, power windows/locks . 2012-2015 Chevrolet Camaro ZL1 (6L90) Chevy transmission won't shift, stuck in 1st gear or limp mode - Speedometer may display zero at all times. 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. Our experts may be able to assist you with the proper installation. Our list of 7 known complaints reported by owners can help you fix your 2010 Chevrolet Avalanche. JEGS will validate the price match before the items are shipped. However, most of these problems dont seem to have any effect on the transmission. Sales & Info: 330-434-5216 These cookies track visitors across websites and collect information to provide customized ads. Because of this, the Tru Cool 40k is the best transmission cooler upgrade for your 1500 or 2500hd (6.0 or 6.2 gas engine) Silverado or Sierra. Find the most common issues based on car owner complaints. TSB 05-07-30-017B - Water contamination - Chevy Avalanche 4L60E. 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. Analytical cookies are used to understand how visitors interact with the website. The Jegs 555-603025 transmission will only work in a '00 Silverado if it has a 13-pin connector. Just use the code "SHIPFORFREE" when you check out. Below is a detailed video of performing a transmission fluid change on a 6l80e in a Chevy Silverado. 2007-2015 Cadillac Escalade In this case were talking about a broken drive shell which will need to be replaced. When the cooler reaches that 190 degree temp, it will constantly cycle between the cooler and staying in the case. 5 PINION FRONT PLANETARY & 5 PINION REAR PLANETARY (4L85E) Pans that come factory on trucks and SUVs do not typically have a drain plug, where as on cars, you should have one towards the back of the pan. Sonnax is an industry leader in the cutting edge design, manufacture and distribution of the highest quality products to the automotive aftermarket, commercial vehicle industries, and industrial sectors utilizing drivetrain technology. Plus I could really see the benefits of my engine upgrades done previously with this transmission. Chevy Avalanche 2022 Engine Performance. By clicking Accept, you consent to the use of ALL the cookies. Well dive into specific transmission problems shortly, but they dont seem to be the thing that would trouble the Avalanche. The transmission lost 2nd and 4th gear; the truck had about 30,000 miles at the time. Find The Best Prices On 6l80 Transmission Pans. The Chevy Avalanche has been rated as one of the Top Large Light Duty Pick Ups by JD . Below we've outlined the most common ones. Any and all shipping costs, including freight damage claims. I'm Stefan, the owner and lead writer at TheDriverAdviser.com!Whether youre planning on buying a new car or you want to know the detailed specs of your current one we got you covered! It takes ab. The 4L85 was never used in a pick up truck. New Solenoids Available touch-screen navigation system. 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. Specifications. 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