2002 grand prix gtp driving home from the store last nite decided to see how it is running, so opened it up a little . I down shifted to second to go though the gears. Car ran great but it would not up shift. Stop the car turned around and started back home and it stilled won't shift up like its stuck in second.Also the idle is high 1500 to 2000 RPM'S, Idle surges up and down, Emaiil is donhard44614@yahoo.com Ijust bought this car used to have a 97 gtp loved the car and just wanted another.