Everything a 4L60E teardown needs in one box: gaskets and seals, frictions and steels, pistons, 2-4 band, filter and replacement shift solenoids.
If your Silverado, Sierra, Tahoe, Suburban, Trailblazer or S10 Blazer has lost third and fourth, flares into fourth on the highway, or keeps setting a shift solenoid code on top of a slipping shift, this is the 4L60E kit built for that combination. Most master kits stop at seals, gaskets and clutch plates. This one adds the parts that usually force a second order halfway through a rebuild: the 2-4 band, a piston kit, a pan filter and a set of replacement shift solenoids. It covers the 4L60E from 1994 on, plus the 4L65E and 4L70E that share the same basic layout, and cross-references to kit numbers 74165E, K61908E and A74421.
A 4L60E makes its four forward gears with five clutch packs (input, 3-4, forward, overrun and low-reverse), one 2-4 band and two one-way clutches. The computer picks the gear by switching shift solenoids A and B, and line pressure from the pump squeezes whichever clutch or band that solenoid combination calls for. When a high-mileage unit fails, it is rarely one part. The 3-4 pack burns, the debris scores the band and drums, and the solenoids that have been sitting in that dirty fluid start to stick. Renewing every friction surface and the two shift solenoids together means you are not putting old electrical parts into a freshly built hydraulic system and chasing a code a week later.
A solenoid code by itself does not mean you need a rebuild. If the unit still holds every gear and the fluid is clean, the problem may be the solenoids, the wiring, or valve body wear. Sonnax notes that a worn actuator feed limit valve bore starves the shift solenoids of feed oil and can cause second-gear starts, solenoid and ratio codes, and no 4th, so rule that out on the bench. Our 4L60E shift solenoid testing guide walks through resistance checks and command tests. If you pull the pan and find heavy clutch debris, or the truck will not pull in third at all, the hard parts are worn and this kit is the right call. The 4L60E common problems guide helps you sort a solenoid fault from a burned pack.
Listed for GM 4L60E, 4L65E and 4L70E from 1994 and later. Typical applications include the 1999-2013 Silverado and Sierra 1500, 1995-2014 Tahoe, Yukon and Suburban 1500, 2002-2009 Trailblazer and Envoy, 1994-2005 S10 Blazer, Jimmy, Astro and Safari, 2002-2008 Avalanche, 1999-2006 Escalade, and C4 and C5 Corvettes. GM changed the 3-4 clutch count, pistons and solenoid connectors over those years, so lay each new part beside the one it replaces before it goes in, and count your 3-4 plates on teardown. If you are unsure, send us the year and VIN before ordering. You can see every kit and hard part we carry for this unit on the 4L60E parts page.
| Fits | GM 4L60E, 4L65E, 4L70E (1994 and later) |
| Includes | Gasket and seal kit, friction plates, steel plates, piston kit, 2-4 band, filter, shift solenoids |
| Cross reference | 74165E, K61908E, A74421 |
| Condition | New |
| Ships | From the USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing includes replacement shift solenoids along with the seals, frictions, steels, pistons, 2-4 band and filter. Compare them against your originals before installing, since connector styles changed over the production run.
It is listed for 4L60E, 4L65E and 4L70E units from 1994 on, which includes the 1999-2013 Silverado 1500. Match the pistons, gaskets and 3-4 clutch count to your old parts, or send us your VIN to confirm.
Not necessarily. Test the solenoid and wiring first and check the valve body for worn bores. A full master kit makes sense when the unit is also slipping or the pan shows heavy clutch debris.
Use Dexron VI ATF. Pre-soak the frictions and band in the same fluid before assembly.
Bushings and the reaction sun shell are not listed in this kit. Inspect both during teardown and replace the shell if the splines show any wear.
