Overhaul kit plus friction and steel clutch modules and a deep-pan filter for 1993-2004 GM 4L60E, so one box covers the soft parts and every clutch pack.
Most overhaul kits leave you hunting for steel plates once the unit is torn down and half of them turn out blued. This 4L60E package avoids that. It is built for 1993-2004 GM trucks, SUVs and cars, including the C/K and Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban, S10, Sonoma, Blazer, Camaro and Corvette, and it puts the overhaul kit, a friction clutch module, a steel clutch module and a deep-pan style filter in one box, with tech sheets for the unit. The kit weighs about 10.3 lb, which gives a sense of how much hardware is in there.
The overhaul kit supplies the gaskets, O-rings, sealing rings, lip seals and common small parts that are disturbed during teardown. The friction module replaces the lined plates in the clutch packs, and the steel module replaces the plates they bear against. That matters because a steel that has been overheated loses its flatness and surface finish, and a new friction run against it glazes quickly. Replacing both sides of each pack, together with the seals that let the pistons hold pressure, restores the clamping force the valve body was calibrated for. The filter is the deep-pan style, the pickup used with the deeper oil pan.
Loss of 3rd and 4th with good-looking 3-4 plates points to stripped sun shell splines, which this kit does not replace.
Drop the pan and look before you buy anything. Heavy lining material and blackened fluid confirm clutch damage. Then road test to find which gears slip, and scan for codes. If the slip came after a missed service, our 4L60E filter and pan service guide explains how contaminated fluid and a restricted filter starve the pump. The high-mileage service checklist covers cooler flow and valve body wear, both of which must be right for new clutches to survive.
Listed fit is the GM 4L60E, 1993 through 2004. That range covers the early electronic units and the 1997-up revised case and harness, so several valve body spacer plate gaskets are included. Match the gasket to the plate stamped on your unit. Pan depth also varies: Sonnax notes GM added a deep oil pan on C/K/G trucks and vans for 1998 with a longer dipstick and tube, so confirm your pan is the deep version before you rely on the supplied filter. If in doubt, send your year and VIN. Other kits and year ranges are in our 4L60E parts collection.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. The kit includes a steel clutch module along with the friction module, the overhaul gasket and seal kit and a deep-pan style filter.
The seals, gaskets and clutch modules are not pan-specific, but the filter is the deep-pan style. A shallow-pan truck needs the matching shallow filter, so check your pan depth before installing it.
Several are supplied because GM revised the spacer plate during 1993-2004. Match the gasket holes to the plate stamped on your valve body, not to the old gasket.
No. Inspect the 2-4 band, bushings and sun shell during teardown and replace any worn parts separately.
Dexron VI. Fill to the dipstick, run it through the gears and set the final level hot in park, since capacity varies with pan depth and cooler size.
