My 2008 Pontiac grand Prix gxp will start and drive.
I was driving and all of the sudden felt a lack of power
behind the throttle. So I immediately parked it thinking that
the transmission had gone out. Knowing that this car is apt
to have transmission problems. After doing some research
and getting a diagnosis ran I got a code that it could be the
TPS. I fixed it and obviously that wasn't the problem. Ideas?