Full overhaul kit for GM 4L60E units 1993-2004: friction and steel clutch modules, deep-pan filter, gaskets, seals, O-rings and sealing rings.
Early and mid-production 4L60E units from 1993 to 2004 sit behind small-block and Vortec engines in the Silverado, Sierra, Tahoe, Suburban, S-10, Blazer, Astro, Camaro and Firebird. When one starts slipping, shifting late, or loses gears entirely, the fix is usually a full teardown. This kit is built for exactly that job: it includes both the friction clutch module and the steel clutch module, a deep-pan filter with pan gasket, the complete soft-parts set and printed tech sheets.
The 4L60E grew out of the 700R4, adding electronic shift and pressure control while keeping the same basic clutch and band layout. Forward, 3-4, overrun, low/reverse and reverse input packs all depend on sealed pistons, and the 2-4 band depends on a sealed servo. A gasket-and-seal overhaul set restores the hydraulics but leaves glazed plates in place, which is why burnt units come back. Because this kit carries the frictions and steels, every pack gets new plates at the same time the circuits are resealed.
Some early 4L60E complaints are solenoid or wiring faults that do not need a rebuild. A 1-2 or 2-3 shift solenoid that fails can leave the truck stuck in one gear, which feels a lot like a mechanical failure. Read the codes and check the solenoids first using our 4L60E shift solenoid guide. If the solenoids test good and the pan is full of friction material, plan on the overhaul. Our common problems guide covers the sun shell and 3-4 pack in more detail.
The listing covers the GM 4L60E from 1993 through 2004. The unit was revised several times in that span, and the Sonnax unit overview separates PWM and non-PWM torque converter clutch apply parts, which is one reason valve bodies from different years are not always interchangeable. The soft parts in a master kit are broadly shared, but compare the old seals and gaskets against the new ones as you strip the case, and check the pan depth: the included filter is the deep-pan style, so a shallow-pan vehicle needs the shallow filter. 2WD and 4WD units also differ at the tailhousing, covered in our 2WD vs 4WD guide. Send us year and VIN if you want confirmation, or see the 4L60E collection for other kits.
With the valve body off, it is also a good time to replace tired solenoids, and to flush or replace the cooler lines so debris from the failure does not return to the new clutches. Ships from the USA.
| Fits | |
| Includes | |
| Filter type | |
| Shipping weight | |
| Package dimensions | |
| Brand |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for GM 4L60E units from 1993 through 2004. Compare the old seals to the new ones during teardown, and send us your VIN if you want fitment confirmed.
Both. It includes the friction clutch module and steel clutch module along with the gaskets, O-rings, lip seals, sealing rings and a deep-pan filter.
No. The included filter is the deep-pan style. Use a shallow-pan filter if your vehicle has the shallow pan.
At least 20 minutes in Dexron VI ATF before assembly, so the friction material is fully saturated.
No. The sun shell is a hard part and is replaced separately. Inspect its splines on every 4L60E rebuild, since it is a common cause of lost third and fourth gear.
