6L90 Overhaul Kit 2007, new and ready to install. Fits the 6L90. Ships fast from the USA.
A 2007 or newer 6L90 that slips when towing, flares between gears or comes back with a pan full of clutch material needs a complete rebuild, and that means replacing more than gaskets. This new kit is a full 6L90 rebuild package for 2007-up units in the Chevrolet Silverado and GMC Sierra 2500HD/3500HD, Express and Savana vans and the other heavy-duty applications. It gives you the seals, both plate sets, new pistons and a filter so the clutch packs go back together with nothing old left in them.
Compared with our 6L90 overhaul kit with shift kit and Sonnax upgrades, this one adds the steels and leaves out the valve body and pump spring upgrades. Choose this kit when your valve body is healthy or being replaced separately and the clutch packs are what failed.
The 6L90 has five clutches and no bands. Every shift is one clutch releasing while another applies, timed by the control module through pressure solenoids. That only works if each pack fills and clamps exactly when commanded. Glazed frictions, heat-checked steels or a piston that leaks around its bonded lip all slow that fill, and the module answers with harder pressure that wears the next pack. Replacing steels along with frictions removes the warped or blued plates that cause shudder and repeat failures after a soft-parts-only job.
Not every slip means a rebuild. A cracked input clutch housing, a worn check ball in the upper valve body or a twisted cooler line can all cause the same complaint, and a rebuild with those faults left in place will fail again. Read codes, check line pressure hot and inspect the pan. Our Silverado 2500 shift problems guide and the 6L90 valve body testing guide help separate hydraulic faults from worn clutches.
Listed for 6L90 (RPO MYD) transmissions built 2007 and later. GM revised internal parts over the 6L90's production run, and the 6L80 is not interchangeable: the 6L90 4-5-6 clutch takes seven frictions to the 6L80's six and several hubs are taller. Confirm MYD on the vehicle's RPO label, compare the plate count and tooth style against what comes out of your unit, or send us your year and VIN to check. Hard parts are on our 6L90 parts page.
| Fits | 6L90 2007 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. It includes the overhaul seal kit, BorgWarner frictions, a steel pack, bonded pistons, a pump bushing and a filter.
No. It is built for 2007-up 6L90 units. The 6L90 uses a different friction count in the 4-5-6 clutch and taller internal parts than the 6L80.
Inspect the input clutch housing for cracks, check the pump for scoring and test the valve body. Those are common reasons a fresh 6L90 rebuild fails early.
This kit includes steel plates. The higher-priced kit leaves steels out but adds a TransGo shift kit, Sonnax pump and valve springs and center support seals.
Yes. Clear adaptive values and run the service fast learn so the module relearns clutch fill times on the new plates.
