2008 Grand Prix

Asked by Carlos Oct 28, 2016 at 08:11 PM about the 2008 Pontiac Grand Prix Base

Question type: Maintenance & Repair

My reduced power engine light is on. I
changed the throttle body the gas pedal
and map sensor. The reduced power
engine light is still on. I can't go pass 75
mph. Can anyone help me solve this
problem

2 Answers

GuruLCBKH answered 5 years ago

On that year there a section of the the wiring harness moisture get in and corrosion start shorting your electrical opponents out it throws everything out it doesn't show up when you scanning and trying to trouble shoot they should of had a recall so you didn't have to replace everything. $2000 dollar for parts and that's not all the labor time lost. Not A Happy Camper.

Mark helpful

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