Master rebuild kit for GM 6L80E and 6L90E with pistons, friction clutches and filter, for 2006-2017 Silverado, Sierra, Tahoe, Escalade, Camaro and Corvette.
A 6L80E that flares on the 3-4 or 4-5 shift, slips in reverse, or keeps setting P0776 after the fluid and solenoid side have been checked usually needs more than plates. This rebuild kit is built for that teardown on 2006-2017 GM six-speeds: Silverado and Sierra 1500 through 3500HD, Tahoe, Suburban, Yukon, Escalade, Camaro and Corvette. It packs the overhaul gaskets and seals together with new clutch pistons, friction clutch plates and a filter, so the job is covered by one order instead of a seal kit, a piston set and a friction pack bought separately. It also covers the heavy-duty 6L90E.
The 6L80E gets six forward speeds from a clutch-to-clutch design: the 1-2-3-4, 3-5-Reverse, 4-5-6, 2-6 and Low/Reverse clutches are applied and released in pairs by the valve body, with no bands. Every one of those packs depends on its apply piston holding pressure. When the piston lip hardens or the piston itself cracks, the TCM commands the right pressure but the clutch never gets all of it, so it slips during the overlap of a shift and the computer reads that slip as a ratio or pressure fault. Fresh frictions sitting behind a tired piston are the classic reason a 6L80 rebuild comes back. This kit lets you replace both halves of the apply circuit at once.
Start with fluid level and condition, since a low 6L80 behaves like a failed one. Read freeze-frame data on any code, then watch commanded versus actual gear on a scan tool to see which clutch is slipping. If the codes are input speed sensor or solenoid circuit codes such as P0716, P0717 or P0751, the problem may live in the valve body and TEHCM, not the clutches. Our 6L80 common problems and fixes guide walks through separating the clutch failures from the electrical ones, and the high-mileage service checklist covers what to inspect once the unit is out.
The listing covers GM 6L80E and 6L90E transmissions from 2006-2017, including the Silverado and Sierra 1500/2500HD/3500HD, Tahoe, Suburban, Yukon, Escalade, Camaro 2010-2017 and Corvette 2008-2017. Half-ton trucks use the 6L80 (RPO MYC) and the HD trucks use the 6L90 (RPO MYD); check the RPO sticker in the glovebox or door jamb before ordering. Piston and clutch counts changed during production, so lay each new piston next to the original before installing it. If anything is unclear, send us the year and VIN and we will confirm. Browse every part for this unit on our 6L80 collection page.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. It is listed for 2006-2017 6L80E and 6L90E units. Confirm your RPO code, MYC for the 6L80 or MYD for the 6L90, and compare the new pistons to your originals before assembly.
The pistons are what apply the clutches. A hardened or cracked piston lets pressure bleed off, so new frictions still slip. Replacing both in the same teardown is what keeps a 6L80 rebuild from coming back.
No. This is an overhaul kit with gaskets, seals, pistons, frictions and a filter. Plan on a converter service or replacement and inspect the valve body and TEHCM separately.
Dexron VI. The 6L80 has no dipstick, so set the level at the check plug on the case with the fluid at operating temperature and the engine running.
Yes. Clear the transmission adapts and perform a fast learn so the TCM relearns clutch fill times for the new pistons and frictions. Skipping it often causes harsh or flared shifts at first.
