9.0

really awful
Typical Repair Cost:
No data
Average Mileage:
122,150 miles
Total Complaints:
4 complaints

Most common solutions:

  1. not sure (3 reports)
  2. replace fuses/relays and box/lid (1 reports)
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problem #4

Aug 192015

Grand Prix 3400

  • Automatic transmission
  • 150,000 miles

Two years earlier the relay for low beam light failed...

First noticed smell like garlic - soon smelled like burnt ballast - hood ajar signal came on - ABS failure indicators - engine died - coasted to stop on a very busy two lane highway US6 - called for wrecker - parts for repair will arrive tomorrow - will update.

- Max Z., Columbia City, IN, US

problem #3

May 042015

Grand Prix 3.8L V6

  • Automatic transmission
  • 142,527 miles

My son noticed the car had been idling rough the last couple of days, so I started going through everything and check the obvious things first. I changed the plugs and wires (which I had done at 124,000), check for air leaks, had the injector check as he stopped at a local auto parts store. When the check engine light came on and they had said it was a cylinder 2 misfire and check the coil pack and everything was operable, except I did find a vacuum leak and repaired.

That was a week ago and it was still running rough. Took him to work this morning so that I could start checking other things like the PCM, ICM and fuses. Once I opened the fuse box under the hood the HDM fuse was fried and fried half of the fuse box. It appears as there is several electrical issues with these cars as I have been doing some research this morning.

I'm at a loss and don't know what to do as I haven't gotten into the cost yet but I know it's not going to be cheap!! GM needs to assist all of these people in some way since there are so many having this issue!!

- randyvol65, Sevierville, TN, US

problem #2

Feb 122014

Grand Prix 3.2L V6

  • Automatic transmission
  • 112,000 miles

click to see larger images

fuse box melted, electrical fire

Notice a burning smell, popped the hood, fuse box was burnt! Had not had this car for a year! Still making payments, estimate was $3100 plus! Very upset, never purchasing a GM car again!

- Betty S., Lexington, KY, US

problem #1

May 082013

Grand Prix

  • Automatic transmission
  • 84,000 miles

Husband was on his way to work and smelled something burning. Go to stop light and it died. Opened up the hood and the electrical fuse box was melted.

- Rebecca P., Upland, IN, US