6T40 Planetary 2009, used and ready to install. Fits the 6T40. Ships fast from the USA.
Early 6T40 owners, especially in a first-generation Chevrolet Malibu or other GM front-drive car from 2009 to 2011, usually go shopping for a planetary after the transmission starts whining at cruise or a gear simply disappears. This is a used, genuine GM 6T40 planetary listed for 2009-up units and removed from a 2011 Chevrolet Malibu. The photo shows the ring gear and carrier assembly; check it against the piece you are replacing before you order.
Inside the 6T40, three simple planetary gearsets do all the ratio work, and five clutches decide which sun gear, carrier or ring gear is held or driven in each range. First gear uses the 1-2-3-4 clutch with the low one-way clutch; fifth is a direct 1.000 ratio through the 3-5-R and 4-5-6 clutches; sixth is a 0.746 overdrive. On the 6T40 the input gearset runs four pinions, one fewer than the heavier-duty 6T45, so the carrier you buy has to match the model on your tag.
Start with the pan. A first-generation 6T40 that lost reverse often broke its 3-5-R wave plate, and the pieces go wherever the fluid goes. A clean pan with a slip complaint points more toward clutches or controls, which our 6T40 common problems guide walks through. Early units also have pressure switch and solenoid faults that can feel like a mechanical failure; the 6T40 shift solenoid guide covers how to separate those. Once it is torn down, a carrier with pitted pinions or excess end play is the confirmation.
This planetary is listed for 2009-up 6T40 units and came out of a 2011 Malibu. That puts it in the first-generation era (2008-2011), before GM introduced the Gen 2 controls for 2012 and later changed the pump and one-way clutch on Gen 3 units. Gear train pieces can carry over between generations, but do not assume it: count the input carrier pinions (four on a 6T40), compare the splines and ring gear to your old parts and the photo, or send us your year and VIN. For a later unit, look at our 2013 6T40 planetary instead.
| Fits | 6T40 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.
No. The 6T45 uses a five-pinion input carrier, while the 6T40 uses four. Match the model on your transmission tag and count the pinions on your old carrier.
Possibly, but 2012 brought Gen 2 changes and later units brought Gen 3 changes. Compare your old parts against the photo or send us your year and VIN before ordering.
The most common cause on early units is a broken 3-5-R wave plate, which also sets P0776. Its fragments can damage the drum and the gear train, so inspect both.
Thrust washers, thrust bearings and any worn bushings, plus a clutch rebuild kit, a new filter and a cooler flush.
Yes. Refill with Dexron VI, check the level hot at the level set plug, and run the scan tool fast learn so shift adapts reset.
