10L90 Master Rebuild Kit 2017, new and ready to install. Fits the 10L90. Ships fast from the USA.
This is a complete reseal-and-frictions kit for the GM 10L90, the heavy-torque version of GM's 10-speed that went into the 2017 Camaro ZL1 and later into 6.2L trucks, SUVs and Cadillacs. It pairs a professional overhaul kit with an OE friction plate set, so it is built for the builder whose 10L90 is slipping, flaring between gears or showing burnt clutch material in the pan and wants every friction and seal replaced in one teardown. Steel plates are not included, so measure and reuse your steels or source them separately.
The 10L90 builds ten forward speeds from four planetary sets and six clutches, labeled A through F, and it shifts clutch-to-clutch with no bands or one-way clutches doing the work. Four clutches are applied in every gear, and each shift releases one and applies another, which is why the kit lists the gears each pack works in. The D-clutch is on in eight of the ten ratios, the C-clutch in seven and the E-clutch in seven, and ATRA's shift anatomy of this unit identifies C, D and E as the clutches that carry the most engagements. Those are the packs that wear first, and they are also where the 10L90 kit carries more plates than the 10L80 version: one more D-clutch friction, one more C-clutch friction, and waved rather than flat E-clutch plates.
Rule out the cheap causes first. GM preliminary information PIP5792E traced harsh shifts, shudder and high fluid temperature on some low-mileage 10L80 and 10L90 vehicles to a twisted cooler line, not internal wear. The valve body is the other big suspect: worn bores and latch valves cause low line pressure and burnt clutches, so read our 10-speed valve body symptoms guide and the pressure control solenoid guide. If a rebuild is on the table, the rebuild cost breakdown shows where the money goes.
The kit is listed for 2017-on GM 10L90 10-speed automatics in cars, SUVs and pickups. The 10L80 uses a different friction count, so confirm the RPO code on your glovebox or door label reads 10L90 before ordering, or send us your year and VIN. More parts for both units are in the 10L80 and 10L90 collection.
| Fits | 10L90 2017 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It is listed as a master kit less steels. It includes the overhaul seals, bonded pistons and a full friction set; reuse your steels if they are flat and unburnt, or replace them separately.
Not as intended. The 10L90 kit carries seven D-clutch and six C-clutch frictions plus waved E-clutch plates, while the 10L80 kit has six D, five C and flat E plates. Use the 10L80 version for a 10L80.
DEXRON ULV only. GM TechLink lists 7.7 L for a fluid change; a rebuilt unit with a drained converter needs more, so fill and then set the level hot per the service procedure.
Yes. Clear the adaptive values and run the transmission service fast learn so the TCM relearns clutch fill times for the new frictions. A replacement valve body also needs its characterization data programmed.
Steels if they are blued or worn, any scored bushings or drums, the pump if the rotor or slide is worn, and the torque converter if the old fluid was burnt or full of debris.
