Full 4L60E and 4L65E overhaul kit for 1997-2003 GM trucks: frictions, steels, band, filter, gaskets and the bonded 3-4 apply piston.
If your 1997-2003 Silverado, Sierra, Tahoe, Suburban, Escalade or S10 shifts into fourth and then flares, slips on the highway, or has started losing third and fourth altogether, this is the kit for taking the 4L60E all the way down and putting it back together right. It is a full overhaul in one box: frictions, steels, the front band, a deep-pan filter with pan gasket, all the paper and rubber gaskets, lip seals, O-rings and sealing rings, plus a new bonded 3-4 clutch apply piston. That last piece is what separates it from a basic soft-parts kit, because the 3-4 piston is where a lot of these transmissions start to die.
The 3-4 clutch lives in the input housing and is applied in both third and fourth gear, so on a truck that spends its life at highway speed it is holding torque almost every mile. Oil fed through the input shaft pushes the 3-4 piston against the apply plate and squeezes the friction and steel stack together. On the original piston the sealing lip is a separate rubber element that hardens with heat and age. Once it leaks, the pack never sees full apply pressure, it slips a little on every shift, heats up and glazes. A bonded piston has the seal molded to the piston itself, so a fresh one restores the full apply force that new 3-4 frictions need. The rest of the kit renews every other clutch, the 2-4 band and every seal in between, so the whole hydraulic chain is tight again.
Two common 4L60E faults are not solved by this kit alone: torque converter clutch slip that sets P0741 is often valve body bore wear, and harsh or soft shifts with P0748 point to the pressure control solenoid. Rule those out separately.
Pull the pan and look. Clean red fluid with a little fine gray paste is normal; flakes of friction material and a burnt smell mean the clutches are cooked. A truck that pulls first and second but has no third or fourth is either a burned 3-4 pack or stripped reaction sun shell splines, and you will not know which until the unit is apart, so plan for both. Our 4L60E 3-4 clutch pack diagnosis guide walks through the road test and pan check, and the 4L60E common problems breakdown covers the faults that mimic a clutch failure.
The kit is listed for Chevrolet Astro, Blazer, C1500, Camaro, Express 1500, S10, Silverado 1500, Suburban 1500, Tahoe, Trailblazer and Trailblazer EXT; GMC C1500, C1500 Suburban, Envoy, Envoy XL, Jimmy, Safari, Savana 1500, Sierra 1500 and Sonoma; Pontiac Firebird 1997-2002; and Cadillac Escalade 1999-2003, Escalade EXT 2002-2003 and Escalade ESV 2003. GM changed input housings, clutch counts and pump details inside this window, and 4L65E units carry a different 3-4 stack than a 4L60E, so check the tag on the case and count what comes out before you commit. If you are not sure, send us your year and VIN. Browse everything else for this unit on our 4L60E parts page.
Refill with Dexron VI, warm it up, check the level hot, and drive it gently for the first few hundred miles while the new frictions bed in.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 2001 Silverado 1500 is on the fitment list, and the 5.3 trucks use the 4L60E this kit is made for. Confirm the transmission tag and count the 3-4 plates on teardown, or send us the year and VIN and we will check it for you.
The 3-4 clutch is applied in third and fourth, so it works almost constantly on the highway. If the old piston seal leaks, new frictions will not get full apply pressure and will burn up again. A new bonded piston removes that leak point.
No. It covers frictions, steels, the band, filter, pan gasket, gaskets, seals, O-rings, sealing rings and the bonded 3-4 piston. Inspect the reaction sun shell splines and the pump slide and rotor during the rebuild and replace them separately if they are worn.
Use Dexron VI. Soak the new frictions in it for at least 30 minutes before assembly, then fill, warm the transmission up and check the level hot.
Not by itself. On the 4L60E, P0741 is often caused by valve body bore wear or a converter problem. Diagnose that separately, because new clutches will not fix a converter clutch apply issue.
The kit is listed for both the 4L60E and 4L65E in 1997-2003 applications. The 4L65E uses a different 3-4 stack, so count your plates and compare before assembly.
