I have a 2005 Pontiac grand prix 3800 3series the
car jumps right into reduced engine power or after
10 minutes into driving have to stop car put in park
then take off but car won't go over 75 runs
sluggish please help
What did it tell you when you scanned it for trouble codes?
Search Pontiac Grand Prix Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Pontiac Grand Prix Experts