6T45 Planetary 2009, used and ready to install. Fits the 6T45. Ships fast from the USA.
The 6T45 went into GM's heavier front-drive applications, including the 2.4L Chevrolet Equinox and GMC Terrain from 2010 on, and when an early unit starts to howl at highway speed or loses a gear, the planetary gear train is on the short list. This is a used, genuine GM planetary listed for 2009-up 6T40 and 6T45 transmissions and removed from a 2011 Malibu. Read the fitment section closely before you buy, because the two models are not identical inside.
The 6T45 shares the family layout: three simple planetary gearsets, three brake clutches and two rotating clutches producing six forward ratios and reverse. The planetaries carry engine torque in every gear, and the 6T45 was built to take more of it than the 6T40, with a 1.25-inch output chain, a stronger case and a five-pinion input carrier in place of the 6T40's four-pinion design. When a gearset wears, the extra load on a crossover that tows or carries weight shows up as noise first and lost gears later.
Not every rough shift is mechanical. A harsh 2-3 shift on 2011 Equinox and Terrain 2.4L 6T45 models was a calibration issue GM fixed with a TCM update, which our 6T40 and 6T45 common problems guide explains.
Look at the pan contents, check the stored codes, and confirm the complaint is mechanical. A slow or delayed engagement is usually a pressure or clutch problem rather than the gears; the delayed engagement guide covers that diagnosis. Order a planetary once the teardown shows damaged pinions, teeth or bearings.
This listing covers 2009-up 6T40 and 6T45 units, and the donor was a 2011 Malibu. Because the 6T45 input carrier has five pinions and the 6T40's has four, count the pinions on your input carrier and compare with the photo before you order, or send us your year and VIN and we will confirm the set matches your 6T45 before it ships. Early first-generation units (2008-2011) also differ from the 2012-on Gen 2 controls in other areas, so match generation as well as model. If yours is a 2016-era Terrain, our 2016 6T45 planetary set came from that application.
| Fits | 6T45 2009 |
| Part type | Planetary |
| Condition | Used |
| 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.
It is listed for both 6T40 and 6T45 units from 2009 on. The 6T45 input carrier has five pinions, so count yours and compare, or send your year and VIN and we will confirm before shipping.
Early 6T45 applications include the 2.4L Chevrolet Equinox and GMC Terrain from 2010. Check the transmission tag or RPO code on your glovebox label to be sure.
Probably not. GM addressed a harsh 2-3 shift on 2011 Equinox, Terrain and Captiva 2.4L models with a TCM calibration update. Rule that out first.
Thrust washers and bearings, bushings, the clutch frictions and wave plates, the filter, and the pump if it shows debris damage.
Dexron VI, with the level checked hot at the level set plug, followed by the scan tool fast learn.
