4L70E Overhaul Kit 2004-2013, new and ready to install. Fits the 4L70E. Ships fast from the USA.
This new overhaul kit is listed for 2004-2013 4L70E transmissions, the late-generation unit behind the 2006-2013 Chevrolet Silverado, Tahoe and Trailblazer SS, the GMC Sierra and Yukon, and some Cadillac and Pontiac models. Buyers usually land here after the truck starts slipping when hot, engages slowly in the morning, or weeps fluid from the case, and they have decided to tear the unit down once and do it right. It ships from the USA with a 1-year warranty and is listed under the GM brand.
Every clutch in this transmission is applied by fluid pressure pushing a piston, and every one of those circuits depends on rubber and Teflon to keep the oil where it belongs. The forward, overrun and 3-4 pistons in the input housing, the reverse input piston, the low-reverse piston, the 2-4 servo and the sealing rings on the turbine shaft and stator hub all wear and harden with heat. Once they leak, apply pressure drops, the clutch slips, it heats up, and the damage spreads. The overhaul kit replaces those seals plus the case and pan gaskets so each circuit holds pressure again. The listing photo also shows a filter and friction plates in the box, so check the contents against your teardown before you order separate frictions.
GM kept refining this family through 2003 and 2004, and parts such as the pressure control solenoid were changed in that window, so rebuild kits are split into earlier and later versions. This one is the later kit, which is what a 4L70E from the 2006-2013 trucks calls for. If you are rebuilding an older 4L60E or 4L65E case, look at the undated 4L70E overhaul kit or confirm with us first.
Leaks out of the vent are not always a seal failure. Transmission Digest traced one 4L70E case to a missing input speed sensor O-ring or retaining bolt, because that sensor bore and the vent share a passage in the pump.
Read codes and line pressure before you commit to a rebuild. An EPC solenoid that is not getting the right current can mimic worn seals, and our pressure control solenoid guide shows how to read the amps. For cold, slow engagement, the delayed engagement guide separates pump and seal causes. If the fluid is dark and burnt with friction material in the pan, plan on a complete rebuild with this kit.
The listing covers 4L70E units from 2004-2013. Confirm your transmission by the identification tag on the case or by your build code, and send us your year and VIN if you want us to check it against the kit. More parts for this unit are in the 4L70E collection.
| Fits | 4L70E 2004-2013 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
If the truck has the 4L70E, yes, it is in the 2004-2013 range. Confirm the transmission code on your glovebox label or the case tag, or send us your VIN.
This one is the later 2004-2013 version. GM changed parts in this family around 2003 and 2004, so match the kit to your build year.
Check the kit contents against your teardown. Steels that are blued or warped and any 2-4 band that is glazed should be replaced.
It fixes engagement delays caused by leaking piston seals and sealing rings. If the pump or a solenoid is the cause, you need to address that part too.
Dexron VI ATF, as GM specifies in the owner manuals for these trucks.
