6T70 Master Rebuild Kit, new and ready to install. Fits the 6T70. Ships fast from the USA.
If your Chevrolet Traverse, Equinox, Malibu or Impala, GMC Acadia or Terrain, Buick Enclave or LaCrosse, or Cadillac SRX has a 6T70 that is slipping, flaring on upshifts or showing friction material in the pan, you are probably past the point of a fluid change. This 6T70 master rebuild kit is the soft-parts package for a complete overhaul. Because this listing is not tied to a single year range, we match it to your transmission build before it ships, which matters more on the 6T70 than on almost any other GM automatic.
The 6T70 is a transverse six-speed that shifts entirely clutch-to-clutch. Five clutch packs (1-2-3-4, 3-5-Reverse, 4-5-6, 2-6 and Low-Reverse) are applied in pairs to make each gear, and every apply is timed by the module from learned fill volumes. That design gives smooth shifts while the packs are healthy and obvious flare or tie-up when they are not. A master kit renews the frictions and steels in those packs and replaces the gaskets and seals that keep each apply circuit tight, so the overhaul starts from consistent clearances instead of a mix of old and new parts.
Unplug-and-test is the quickest first check ATRA gives for the no-Reverse complaint: if Reverse engages with the transmission connector unplugged, the shell is not the problem and you look elsewhere. Beyond that, read all stored codes, check the fluid at 180-200 F, and inspect the pan contents. A unit with clean fluid and only shift-quality complaints may need valve body or adapt work rather than an overhaul. The Equinox common problems guide and the Acadia common problems guide walk through those checks on the two most common platforms.
The 6T70 ran from the 2007 model year into 2019 and changed several times. GM updated the planetary carriers and their bearings for 2009, revised the wave plates after early breakage, and released a major Generation 2 controls update for 2013. Even 2013 is mixed: ATRA notes only 6T70 units with RPO M7W or M7U got Generation 2 that year, and others waited until 2014. Clutch stack-ups and sealing parts differ between generations, so send your year, VIN and the transmission RPO from the glove box label, and we will confirm the kit matches before shipping. If you already know your generation, the Gen 1 kit for 2007-2012 and the Gen 2 kit for 2013-up are listed separately. Every 6T70 part we stock is on the 6T70 transmission page.
| Fits | 6T70 |
| Part type | Master Rebuild 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 is not limited to one range, so we match it to your unit. Send year, VIN and the M-series transmission RPO from the Service Parts Identification label and we confirm Generation 1 or Generation 2 before it ships.
GM's 2013 controls update changed the clutch stack-ups and several sealing parts. Gen 1 soft parts can physically fit a Gen 2 unit and still give wrong clearances, so the generation has to match.
On a 2010 or earlier unit, yes. ATRA recommends the updated wave plates in every clutch, because the original 3-5-Reverse plate is the most common one to break and the debris damages the planetary.
Dexron VI. A pan drain-and-refill on a 2012 Acadia is listed at 5.0 L (5.3 qt), but a rebuilt dry unit takes considerably more, so fill, run it and set the level hot at 180-200 F.
If you replace the transaxle or the module it must be programmed to the vehicle. After a rebuild of the same unit, run Service Fast Learn Adapts so the module relearns clutch fill on the new frictions.
