Seven-piece deluxe overhaul kit for 1997-2013 GM 4L60E units: high friction clutch pack, steels, pistons, flex band, pump bushing, filter and gaskets.
If your Silverado, Sierra, Tahoe, Yukon or Suburban has already burned one 3-4 clutch pack, or you tow with a half-ton and want the rebuild to hold, this is the kit built around that problem. It covers 1997-2013 GM 4L60E, 4L65E and 4L70E units and ships as seven line items in one box: a red two-tang flex band, a babbitt pump bushing, a deep-pan filter, a high friction clutch pack, a three-piece bonded piston kit, a steel clutch pack and the overhaul gasket and seal kit, about 12.5 lb shipped.
The 3-4 clutch in a 4L60E lives inside the input housing, and space there is tight. The pack has to carry full engine torque in 3rd and 4th, and on LS-powered trucks that is a lot of torque for so few plates. Sonnax also points to the factory backing plate flexing during apply, which loads the pack unevenly and builds heat. Stock-material frictions in that environment burn again under the same use. High friction linings raise holding capacity without changing the drum, the piston or the plate count, so the pack locks up sooner and slips less on each shift. Pairing them with new steels gives the linings a flat, clean mating surface, and the bonded pistons replace hardened lip seals that otherwise let apply pressure leak away and cause a soft or slipping 1-2.
A slipping 4L60E is not always a clutch problem. Worn valve body bores can starve clutch apply and cause P0741 converter slip, and a weak pressure control solenoid (P0748) produces soft shifts that feel like wear. Vacuum testing the valve body is covered in our valve body rebuild walkthrough, and the 4L60E common problems guide lists the usual suspects. Fix the hydraulics in the same job, because new frictions on a low-pressure circuit will still slip.
The kit is listed for 1997-2013 GM 4L60E, 4L65E and 4L70E transmissions. Those units share the basic layout but differ in internal specs, so the case ID tag is the authority, not the year of the truck. Check two things before ordering: that your pan is the deep pan (the included filter is the deep-pan style), and the clutch count in your 3-4 and forward drums. Send us the year and VIN if you want help matching it. If your steels are still flat and you only want frictions, compare the same kit less steels, or browse the full 4L60E collection.
| Fits | |
| Kit contents | |
| Piece count | |
| Shipping weight | |
| Friction material | |
| Not included |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, it is listed for 1997-2013 4L60E, 4L65E and 4L70E units. Confirm your unit on the case ID tag and check that your pan is the deep pan, since the included filter is the deep-pan style.
The 3-4 pack in a 4L60E is small for the torque most V8 trucks make. High friction linings add holding capacity without changing the drum or piston, which helps on trucks that tow or run a tune.
No. The kit is soft parts, steels, pistons, band, pump bushing and filter. The sun shell, input housing, pump and torque converter are not included.
Steels are already in this version. If your steels measure flat and clean you can choose the less-steels version instead and save the cost.
Dexron VI ATF. Soak the new frictions in it before assembly and check the level hot at idle in Park after the first drive.
Not by itself. Those codes usually point to valve body wear or the pressure control solenoid. Diagnose and fix the hydraulics in the same job so the new clutches get full apply pressure.
