Master 4L60E kit combining overhaul, friction and steel kits: 22 frictions, 19 steels and a filter for 2004-up GM 4L60E, 4L65E and 4L70E.
A rebuild that chatters, slips or burns up again a few thousand miles later is often one where the old steel plates went back in. This 4L60E master kit is three kits in one box for the 2004-up units: the overhaul gasket and seal kit, a friction kit with 22 friction plates, and a steel kit with 19 steel plates, plus a filter. It is aimed at the owner or shop rebuilding a late Silverado, Tahoe, Colorado, Escalade or Avalanche that came in slipping or with burnt fluid, and who wants every pack renewed rather than only the frictions.
Each clutch pack in the 4L60E alternates friction plates with steel plates. When the pump applies the piston, the stack is clamped and the drum turns as one with its hub. If a pack slips under load, which is the classic 3-4 clutch failure on these trucks, the heat goes straight into the steels. They take on a blue tint, develop heat checks, or warp so they no longer sit flat. A warped or glazed steel will not grip a new friction evenly, and that is how a fresh rebuild ends up with a shudder on apply or a 3-4 shift that flares. Because this kit carries both frictions and steels, you can put new surfaces on both sides of every pack instead of sanding and reusing plates.
Pull the pan first. Friction lining, band material or bright metal on the magnet means the packs are damaged and a master kit is justified. If the debris is light and the main complaint is shift feel, the problem may be in the valve body or solenoids rather than the clutches. Our 1-2 accumulator and shift feel guide covers the hydraulic causes of a firm or soft 1-2, and the shift solenoid guide explains how to test the electrical side before you split the case.
The kit is listed for the GM 4L60, 4L60E, 4L65E, 4L70E and 4L75E from 2004 up. Listed applications include 2004-2006 Escalade with the 5.3L or 6.0L, 2007-2008 Avalanche, 2004-2010 Colorado, 2004-2005 Corvette, and 2004-2010 Silverado 1500 and Tahoe, plus the matching GMC, Cadillac and Hummer models. The year of your core is the key check: 1993-2003 units take different valve body gaskets, so this kit is not the right choice for them. If your transmission is a 2003 or earlier, look at the 1993-2003 master rebuild kit instead. When in doubt, send us your year and VIN, and browse all 4L60E parts for the hard parts you may need.
Drums, shells, planets and bushings are not included. Inspect them during teardown. Many rebuilders install a new 4L60E pump at the same time if the pump bushing or gears show wear, and a front pump alignment band keeps the pump halves true when you bolt them together. For a full list of bench tools see our 4L60E bench tools guide.
| Type | Master rebuild kit (overhaul + frictions + steels) |
| Fits | GM 4L60, 4L60E, 4L65E, 4L70E, 4L75E (2004-up) |
| Includes | 22 friction plates, 19 steel plates, filter, gaskets, seals, O-rings |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Steels in a pack that slipped have usually been overheated. Blued, heat-checked or warped steels do not grip new frictions evenly and can cause chatter or a repeat slip. Replacing them with the frictions gives both surfaces a fresh start.
No. This kit is for 2004-up units. 1993-2003 4L60E transmissions take different valve body gaskets, so use a kit made for that year range.
The listing covers 22 friction plates, 19 steel plates, the filter, gaskets, seals and O-rings. A band and pistons are not listed, so plan to inspect your band and pistons and replace them separately if needed.
Dexron VI ATF, both for the 30-minute friction soak and for the fill after installation.
Yes. The kit is listed for the 4L60, 4L60E, 4L65E, 4L70E and 4L75E from 2004 up. Compare the gaskets with your originals before assembly.
