Frictions, steels, filter, valve body gaskets and the full seal set to overhaul a 1993-2003 GM 4L60E that slips, flares 2-3 or burned its 3-4 pack.
If your 1993-2003 Chevy or GMC with the 4L60E flares between 2nd and 3rd, never finds 4th, or slips on the 1-2 shift, and the pan came off full of friction material, the transmission is past a fluid change. This overhaul master kit (part number COP-10036501) is built for the early-case 4L60E and cross-references to the common 74165E and K61908E kit numbers, so it lines up with what most rebuild manuals and parts counters call the standard master kit for these years. It is the soft-parts core of a full teardown on an S10, Blazer, Astro, Silverado 1500, Tahoe or Corvette.
The 4L60E is a four-speed rear-drive unit that stacks its overrun, forward, 3-4 and reverse input clutches around the input shaft and holds 2nd and 4th with the 2-4 band. Every one of those clutch packs relies on frictions, steels and rubber or Teflon seals that harden and wear over time. This kit replaces the friction plates and steel plates, the complete lip seal, sealing ring and O-ring set, the valve body separator plate gaskets, the pan gasket and the filter. Once the case is empty, you can rebuild every drum with fresh soft parts instead of reusing a seal that has taken a set. At about 13 lb it is a complete box, not a gasket-only reseal kit.
A master kit is the right answer when clutch packs are burned, not when a valve body or solenoid is causing the complaint. Scan for codes first: P0741 points to a converter clutch problem that is often valve body bore wear, and P0748 points to the pressure control solenoid, neither of which a soft-parts kit fixes on its own. Then drop the pan and look at the debris. Our 4L60E common problems guide walks through which symptoms mean a teardown and which do not, and the 2-4 band and servo guide covers the 1-2 slip complaint in detail.
This kit is listed for the 1993-2003 GM 4L60E. Applications on the listing include the 1994-2003 S10, Blazer, Jimmy, Astro and Safari with the 4.3L, the 1999-2003 Silverado 1500, the 1995-2003 Tahoe and Suburban 1500, the 2002-2003 Trailblazer and Envoy, and the 1994-2003 Corvette. GM revised the 4L60E several times inside that span, so match the separator plate gasket to the plate that comes out of your valve body and compare pistons and seals against your originals. The 4L60E changed again for 2004; if your truck is 2004 or newer, use a 2004-up kit. When in doubt, send us your year and VIN before ordering. Browse every part for this unit on our 4L60E collection page.
The bench tool list in our 4L60E rebuild tools guide is worth reading before you split the case.
| Transmission | GM 4L60E (1993-2003) |
| Includes | Friction plates, steel plates, filter, valve body gaskets, pan gasket, seals and O-rings |
| Cross-reference | 74165E, K61908E |
| Manufacturer part number | COP-10036501 |
| Kit weight | 13.2 lb |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
They are common industry kit numbers for the 4L60E master overhaul kit. The listing cross-references this kit to both, which helps you match it against a parts catalog or rebuild manual.
The listing covers frictions, steels, filter, valve body gaskets, pan gasket and the seal and O-ring set. A band and bonded pistons are not listed, so inspect yours and order them separately if they are worn.
No. This kit is for the 1993-2003 4L60E. GM changed the unit in 2004, so a 2004-up truck needs a 2004-up kit.
It renews the 3-4 clutch pack, but no 3rd and 4th is also caused by stripped sun shell splines. Inspect the sun shell during teardown; it is a hard part and is not in the kit.
Dexron VI ATF. It is the current GM fluid for the 4L60E and is backward compatible with the earlier Dexron fills these trucks used.
