Bought car brand new in 2001. Car was less than 6 months old and had to have valves and pistons replaced. Transmission started slipping off and on, took into shop in 2003, still under warranty. Shop could find nothing wrong. Transmission continued to slip and jerk intermentally. Took to shop in December 2004 with approx. 2,500 left on warrenty. Shop kept car for 4 days, said they hooked it up to computer, found no errors with the transmission, changed out filters, fluids, etc and drove the car for 4 days, said they could never get the transmission to slip or jerk. Day after we picked the car up, the transmission slipped, and continued to slip. I called the shop and was told that there was nothing they could do because they had never found a problem with the transmission. I told them again what the transmission was doing and again they told me that after 4 days of looking there was NO PROBLEM. Transmission went totatly out 3 1/2 months later and 5,000 miles out of warranty. Had the car never been taken in for this problem we would have no complain. We depend and trust the service departments to find the problems and fix them. I know for a fact the the shops dont like to do warranty work. I had a nephew that worked for Pontiac in the service department. Pontiac refuses to cover the transmission now that the warranty is up. They said since there was never a problem found with the transmission in Dec and NOW that the warranty is up that they are not responciable. A car with 80,000 miles shouldnt have the transmission go out of it!!!! Now Pontiac is offering me $2,000 off of a new vechicle. WHY would I want another GMAC if they wont stand behind their product?!!!!