About 3 months ago my cars tranny went out so I ordered one from
www.transmissioncenter.net and it broke in 3 days and still under warranty so they rebuilt it and sent it back to me, it was running crappy so they said replace the MLPS sensor, that made it go into overdrive at least, but if i tried to downshift at 30 MPH it would slip then slam into gear. so they sent me a valve body but it was to late the tranny broke. SO after talking to the mechanic up there he said send my orginal tranny and they will rebuild it, It turns out that It was the TORQUE CONVERTER CLUTCH SOLINOID. it was sending the code 628. Now it runs like a bad out of hell, and comes with a transgo shift kit that hits hard