GM · Rebuilt, built to order
Rebuilt 6L90 transmission for 2500HD, 3500HD, Express and Savana
A rebuilt 6L90 is the heavy-duty version of GM's 6-speed rear-wheel drive automatic, rebuilt in our Plantation, Florida shop. It is for gas Silverado and Sierra 2500HD and 3500HD trucks, Express and Savana 2500 and 3500 vans, and a few high-output cars like the CTS-V and Camaro ZL1.
Price
From $2,339
Final price confirmed for your VIN before you pay. Some years, engines and 4WD versions cost a little more. Plus a refundable core deposit.
- Type
- 6-speed heavy-duty automatic, rear-wheel drive / 4WD
- Build time
- About 4 to 6 weeks
- Delivery
- Free pickup or freight
Fits these vehicles
- Chevrolet Silverado 2500HD and 3500HD with 6.0L gas V8 (2008 to 2019)
- GMC Sierra 2500HD and 3500HD with 6.0L gas V8 (2008 to 2019)
- Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with 6.6L gas V8 (2020 to 2023)
- Chevrolet Express 2500 and 3500 (2010 to 2023)
- GMC Savana 2500 and 3500 (2010 to 2023)
- Cadillac CTS-V (2009 to 2013)
- Chevrolet Camaro ZL1 (2012 to 2015, automatic)
Common applications. Your VIN confirms the exact version before we build.
Signs yours is failing
- Shudder at light throttle when loaded
- Slipping or flaring while towing
- Harsh engagement or a harsh 1-2 shift
- No reverse or missing gears
- Fluid running hot or smelling burnt
- Check engine light with shift or pressure codes
Weak spots we fix
- Torque converter lockup clutch wear and shudder in tow and fleet use
- 3-5-R clutch wear, a weak spot it shares with the 6L80
- Heat damage to clutch packs from constant towing and van duty
What's in the rebuild
- New clutches, steels, seals and gaskets
- Replacement of worn or damaged hard parts after a full teardown
- Updated parts for the 3-5-R clutch and converter weak points
- Torque converter matched to your truck or van
- New filter and fresh fluid
- Written warranty
About the 6L90
The 6L90 is the heavy-duty sibling of the 6L80. It shares the same basic 6-speed layout but has more clutch capacity and stronger internal parts so it can take more torque. GM put it behind the 6.0L gas V8 in Silverado and Sierra 2500HD and 3500HD trucks, and later behind the 6.6L gas V8. It also went into Express and Savana 2500 and 3500 vans, plus high-output cars like the Cadillac CTS-V and Camaro ZL1. Most of them live hard lives pulling trailers or hauling cargo all day.
What wears out a 6L90
Work is the short answer. Vans carry weight all day with lots of stop-and-go, and HD pickups pull trailers for hours. That heat breaks down the fluid and the torque converter's lockup clutch, which leads to shudder and debris. The 3-5-R clutch, a known issue on the 6L80, is also a wear point here. Once pressure drops in the valve body, clutches start to slip, and slipping makes even more heat. A rebuild resets the cycle with new friction material, a good converter and fixes for the known weak points.
Rebuild or used for a work vehicle?
When a van or HD truck is down, the first used unit you find can look tempting. The trouble is that most used 6L90s come out of vehicles that worked just as hard as yours, and there is no way to see the clutch packs from outside. A reman is built to a general spec. Our rebuilds are VIN-checked, so the case, output and controls match your truck or van, and every unit is torn down and rebuilt by hand in our Plantation shop. For fleets, that means fewer surprises after install.
How it works
01
Send your VIN
We confirm the right unit and your final price.
02
Pay online
Secure Stripe link. Refundable core deposit.
03
We build it
Rebuilt in our Plantation shop. Usually 4 to 6 weeks.
04
Ship or pick up
Free pickup, or freight with tracking.
6L90 questions
Is a 6L90 the same as a 6L80?
No. They look alike, but the 6L90 has more clutch capacity and different internal parts, so one is not swapped for the other. We confirm which one your vehicle needs from the VIN.
Do vans and pickups use the same 6L90?
Not always. Express and Savana vans, 2WD trucks and 4WD trucks use different output and tailhousing setups. Send your VIN and we build the version that fits.
Will my truck or van need programming after install?
Like the 6L80, the 6L90 has its control module inside the unit. Some units need a relearn or programming after install; we'll tell you if yours does.
How does a rebuilt 6L90 get to my shop or yard?
After you pay online and we VIN-check the order, we rebuild the unit in Plantation. You can pick it up at 631 S State Rd 7 or we send it by freight. A refundable core deposit is part of the order.
How long does it take?
Units are built to order. Most are ready about 4 to 6 weeks after payment. Need it sooner? Call us, we can often work something out.
What is the core deposit?
A refundable deposit added at payment. Send your old transmission back to the shop and we refund it to your card once it's checked in.