Full 4L60E master overhaul kit with friction plates, steel plates, four valve body gaskets, pan gasket, seals and O-rings for a 1994-up teardown.
If your 1994-or-later Silverado, Sierra, Tahoe, Yukon, Camaro, S10 or Express has a 4L60E that flares on the 2-3 shift, drops out of 3rd and 4th under throttle, or showed a pan full of black clutch material at the last service, the transmission is past the point where a solenoid or a fluid change will help. This master kit gives you everything that wears in the clutch packs plus the seals and gaskets that have to come off anyway, so one teardown renews the whole unit. Unlike a soft-parts banner kit, it includes a full set of steel plates as well as the frictions.
The 4L60E holds each gear by applying a combination of clutch packs and the 2-4 band through a pair of planetary gearsets. The overrun, forward, 3-4 and reverse input packs all live inside drums that are sealed by lip seals and O-rings, and line pressure from the pump has to reach every piston without leaking past those seals. When the frictions glaze and the steels heat-spot, a pack can no longer hold torque even with full pressure behind it, and every leaking seal makes that worse. This kit replaces the frictions and steels in every pack, the piston lip seals, the large case and drum O-rings, the front pump seal, the rear extension seal, the cork pan gasket, and the small O-rings for the case and valve body passages. It also carries four separator plate gaskets because GM changed the valve body hole pattern over the production run.
Pull the pan first. Fine gray paste is normal; brown friction flakes and bronze or steel chunks mean the packs are finished. Codes such as P0741 for converter clutch slip or P0748 for the pressure control solenoid point to valve body and solenoid wear, and a rebuild that skips the valve body will come back with the same complaint. Sonnax publishes a vacuum test guide for the 4L60E valve body, and our 4L60E valve body rebuild walkthrough explains which bores to test and when a reamed fix is needed. If the truck has no 3rd or 4th but the fluid looks clean, inspect the sun shell before you buy clutches.
This kit is listed for the GM 4L60E from 1994 on and is cross-referenced to the 4L65E and 4L70E and to OE kit reference T05700B, with manufacturer number ING-GN01888. The 4L60E went through several running changes, so match the valve body gasket you install hole for hole against the one you remove, and count your old plates before you stack new ones. Check the ID tag on the right side of the case to make sure you have a 4L60E and not a 4L80E, which was used in heavy-duty versions of the same trucks. If you are unsure, send us the year and VIN before ordering. Every kit, solenoid and hard part we carry for this unit is on the 4L60E parts page.
For the tools you will need on the bench, read 4L60E Rebuild: The Bench Tools You Actually Need before you start.
| Transmission | GM 4L60E / 4L60-E, 1994-up (also listed for 4L65E, 4L70E) |
| Includes | Friction plates, steel plates, valve body gaskets (4), pan gasket, front and rear seals, piston seals, O-rings |
| Not included | Band, bushings, bonded pistons, filter, sprags |
| OE kit reference | T05700B |
| Manufacturer part number | ING-GN01888 |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. It includes a full set of friction plates and steel plates along with the seals, O-rings, front and rear seals, pan gasket and four valve body separator plate gaskets. The band, bushings, bonded pistons, sprags and filter are not included.
The kit is listed for the 1994-up 4L60E and cross-referenced to the 4L65E and 4L70E. Those later units use some different packs, so count and compare your old plates before assembly, or send us your year and VIN to confirm.
GM changed the separator plate gasket pattern during 4L60E production. Lay each new gasket over the one you removed and use the one whose holes match exactly. The wrong gasket can block or cross-feed a circuit and cause shift problems.
Use Dexron VI ATF. Soak the new frictions in it for at least 20 minutes before assembly and fill to the correct level with the engine running and the fluid at operating temperature.
Possibly. A burned 3-4 clutch pack causes it, but so does a stripped sun shell, which this kit does not replace. Inspect the fluid and the sun shell splines before deciding what to buy.
Clear any stored codes and run the adaptive relearn with a scan tool if your vehicle supports it, then drive the truck through every gear with light throttle so the computer can adapt shift timing to the new clutches.
