Overhaul kit for GM 6L80E and 6L90E units with frictions, steels, gaskets, seals, O-rings and the pan filter, replacing OE 195901XLS and 24236931.
This is the soft-parts overhaul for a GM 6L80 or 6L90 that has started to flare, shudder or set pressure codes on a 2007-2016 Yukon, Escalade, Avalanche, CTS, Camaro, Caprice or Express van. It replaces kit numbers 195901XLS, 195903XLS, 24236931, 34664P, 195940, 135710D and 515709, and the box holds the friction plates, the steel plates, the complete gasket and seal set with O-rings, and the pan filter. It is the right kit when the case, drums, pistons and pump are reusable and the wear is in the clutch packs and seals.
The 6L80 shifts by handing torque from one clutch to the next: the 1-2-3-4, 3-5-Reverse, 4-5-6, 2-6 and Low/Reverse packs are fed by sealing rings and apply pistons, and the valve body times each overlap. Steels and frictions carry the load, while the sealing rings and O-rings keep apply pressure from leaking between the drum, shafts and case. Once fluid is neglected the frictions glaze, the 3-5-R wave plate loses its cushion, and worn sealing rings bleed pressure off. The TCM sees the slip and logs it. Replacing plates and seals together restores both the holding power and the pressure that applies it.
Check the fluid first. A dark, burned smell with friction material on the magnet means the clutches are worn; clean fluid with a pressure code may point to the valve body instead. Codes like P0716, P0717 and P0751 are sensor and solenoid faults handled by the TEHCM, not the clutches. The 6L80 common problems and fixes guide lays out how to tell a clutch failure from a converter or valve body failure, and the 6L80 Camaro shift problems article covers flare and shudder diagnosis on the car applications.
This kit covers 6L80, 6L80E, 6L90 and 6L90E transmissions from 2007-2016. Listed applications are the 2009-2013 Avalanche, 2010-2015 Camaro, 2012-2013 Caprice, 2007-2015 CTS, 2007-2017 Escalade, 2007-2009 STS, 2006-2009 XLR, 2007-2016 Yukon and the Express 1500 through 4500. The 6L80 and 6L90 are one family, but plate counts differ between them, so read the transmission ID tag on the case and count your original plates before assembly. If you are unsure, send the year and VIN and we will check it. Every 6L80 part we carry is on the 6L80 collection page.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Friction plates, steel plates, the overhaul gasket and seal set with O-rings, and the pan filter. It does not include the torque converter, valve body, pump, pistons or other hard parts.
The listing shows it superseding 195901XLS, 195903XLS, 24236931, 34664P, 195940, 135710D and 515709.
The listing includes the Express 1500 through 4500. Read the ID tag on the transmission to confirm 6L80 or 6L90, since clutch counts are not identical between the two.
Inspect them. If a drum fails an air check or a piston lip is hard or cracked, replace it. A bonded piston set is the usual add-on when the unit has high mileage or burned clutches.
Dexron VI, with the level set at the check plug at operating temperature. After the rebuild, clear transmission adapts and run a fast learn so the TCM relearns clutch fill on the new plates.
