6T75 Planetary, used and ready to install. Fits the 6T75. Ships fast from the USA.
Rebuilders usually go looking for a single 6T75 planetary after opening the case and finding one carrier with burnt or seized pinions while the rest of the gear train is fine. This used OEM carrier is for that job: a 6T75 that howls under load, drops a gear, or lost a carrier to steel from a broken 3-5-Reverse waved plate. Buying the one damaged member costs far less than a whole gear train, as long as you identify the right piece.
GM's 6T70 and 6T75 transaxles stack three planetary gearsets inside the case: input, reaction and output. Each set has a sun gear, a carrier full of pinions and a ring gear, and the clutches lock different members together to make six forward ratios and reverse. Because the clutches are applied and released directly by the TCM, a slipping or binding carrier changes how every shift feels, not just one. The 6T75 is the heavy-duty variant. ATRA lists its upgrades as a shot-peened output carrier and a five-pinion carrier, along with a wider transfer gear and a beefier differential carrier, so carriers from the two versions are not interchangeable in a unit that tows.
Before ordering, lay your old carrier next to the listing photo. Count the pinions, compare the spline count on the hub and check the diameter. ATRA points out a trap with the reaction carrier: catalogs often draw it together with the input ring gear, but the carrier, the ring gear and its snap ring are serviced as separate pieces. If your carrier comes off with a ring gear on it, keep that ring gear. Also note your build year. ATRA reports that GM deepened the sun gear bearing pockets on the output and reaction carriers for 2009, so a later carrier needs the updated bearings when it goes into an earlier unit. For the failures that usually lead here, read our 6T70 and 6T75 problems guide and the Acadia shift problems guide, which separates real hard-part damage from adapt and valve body complaints.
This listing is a 6T75 planetary without a specific model year, so the year range and exact carrier position are not stated. Treat matching as your job or ours: compare it to your old part, check the RPO code on the vehicle (MH6 or MY9 for the 6T75, per ATRA), or send us the year and VIN and we will confirm before it ships. Need a dated part instead? The 2011 6T75 planetary is listed separately, and every other part for this transaxle is on our 6T70 and 6T75 model page.
| Fits | 6T75 |
| Part type | Planetary |
| Condition | Used |
| 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 does not say which position it is. Compare the pinion count, hub splines and diameter with your old part and the photo, or send us your year and VIN and we will confirm the match before shipping.
Yes. Replace the thrust bearings and washers around it. GM changed the sun gear bearing pockets on the output and reaction carriers for 2009, so use the bearing that matches the carrier design.
Not as an equal. ATRA lists a shot-peened output carrier and a five-pinion carrier among the 6T75 heavy-duty parts, so stay with 6T75 carriers in a 6T75.
In most cases it is debris from a broken 3-5-Reverse waved plate, the condition behind no reverse, 3rd or 5th with P0776. Install updated waved plates in every clutch when you rebuild.
Yes. This part ships from the USA and carries the 1-year warranty shown in the specs.
