GM has alot of problems with this trans & they will not step up to the plate & correct these concerns. Here is some of the problems. The Sun Shell comes apart,Valves stick inside the Valve Body. These are the most common problems these trans have. If someone would like to explain why GM has not corrected these concerns I would like a answer please. GM needs to step up to the plate & recall these trans for the valve body & sun shell. If someone works for GM or anyone else has a answer please explain thanks.