4L70E Overhaul Kit, new and ready to install. Fits the 4L70E. Ships fast from the USA.
When a 4L70E has burned its 3-4 clutch or 2-4 band, a box of seals alone will not get the truck back on the road. This new overhaul kit is the one to look at if you want the soft parts and the wear parts together. The listing photo shows stacks of friction plates and steel plates, a 2-4 band, the pan and case gaskets, piston seals and sealing rings, front and rear seals, and a pan filter. It is listed for the 4L70E found in 2006-2013 Chevrolet Silverado, Tahoe and Trailblazer SS and GMC Sierra and Yukon models, ships from the USA, and carries a 1-year warranty.
The 4L70E uses five clutch packs and one band to make four forward gears and Reverse. The forward, overrun and 3-4 clutches stack up in the input housing, the reverse input clutch sits in the reverse input drum, the low-reverse clutch is at the rear, and the 2-4 band wraps the reverse drum for 2nd and 4th. Frictions and steels do the gripping; seals and rings hold the oil that clamps them. When the rebuild calls for both, a kit that bundles them saves you from mixing parts from different makers and keeps clearances predictable.
Sonnax lists 3-4 clutch burned and 2-4 band burned at the top of the recorded complaints for this unit.
A 3-4 pack usually burns because pressure leaks away from it, not because the frictions were weak. Read the 4L70E 3-4 clutch failure guide before you order, since a rebuild that skips the cause will fail again. If you are seeing harsh shifts or erratic pressure rather than slipping, check the valve body with our valve body testing guide first.
This listing does not name a year range, so the photo and part type are the best guide. The 4L70E shares its case and clutch-pack platform with the 4L65E, and many soft parts are common across the 4L60E family, but tooth counts, pack heights and some sealing rings changed over the years. Count your old plates and compare them against the kit, or send us the year and VIN before it ships. If your unit is 2004 or later and you only need seals and gaskets, the 2004-2013 overhaul kit is listed separately. Every other part for this transmission is in the 4L70E collection.
| Fits | 4L70E |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing photo shows friction plates, steel plates, a 2-4 band, the gasket set, piston seals, sealing rings, front and rear seals, and a pan filter.
It is listed for the 4L70E without a year range. That unit was used in 2006-2013 GM trucks and SUVs. Compare plate counts with your old parts or send us your VIN.
It replaces the burned frictions and the leaking seals, but find the leak that starved the pack first, such as a stuck checkball or worn sealing ring groove, or it can burn again.
Only if the band surface is dished, cracked or blued. Check it with a straightedge; a new band will not hold on a damaged drum.
Dexron VI ATF, the fluid GM specifies for the 4L70E.
