Where is the fuel filter to check or change
Have problems starting sometimes check engine light stays on and flicks on and off
sometimes when driving as if it doesn't want to pick up and go
It is located back by the fuel tank on the frame rail, when you go to get a fuel filter have them check the codes for you, there could be something more going on then just a low fuel flow, write them down and repost them back here and someone will jump in and help you with further diagnosis.
A flashing check engine light is warning you the engine is misfiring and damaging the catalytic converter. If you have over 100,000 miles on your Grand Prix you're overdue for a tune up. Try that first. HTH. -Jim
All good advice, but let's get it in the right order. First check the codes, then address whatever issues are indicated by the codes, then give the care a tuneup if it hasn't had one which should include checking the fuel pump pressure and a new filter if it hasn't already been done. Hopefully that will keep you from fixing what ain't broken. Good luck.
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