Question about 2003 Pontiac Grand Prix

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Brake Lights do not work and hazard button is stuck

I just had all 4 window regulators replaced and now when nigth time comes the inside dash lights are gone. All is well during the day but nothign at night. Also I have no brake lights and all fuses are fine, and I replace the bulbs.

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I could not tell you how many times people have brought their cars into my shop and tell me that they had already checked all fues and they are OK, then I check the car and find a blown fuse or a fuse that is completely missing.

Your dash (Instrument Cluster) illumination lights are powered by the "PARK LP" fuse in the underhood fuse panel - it is fuse number 37 and should be a 20 Amp fuse. If this fuse is blown, your Park lights on the exterior of the car will also not be working. If they are working and your dash lights are not, then the problem is probably in your headlamp switch.

Your Brake lights are powered by the "STOP LAMP" fuse in the instrument panel (IP) fuse block it is a 15 Amp fuse.

Your Hazzard lights are powered by the "HAZZARD" fuse in the (IP) also a 15 Ap fuse.

If both of these fuses are good, then the most likely problem with your brake and hazzard lamps is the multifunction (Turn Signal) switch.

What any of the above has to do with replacing your window regulators remains a mystery.

Posted on Oct 30, 2009

  • Sherrie Brown
    Sherrie Brown Oct 16, 2014

    Where is the IP fuse block?

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I have a 2001 GT that the hazard button was stuck and brake lights did not work. After checking related fuses and brake switch ok, I checked for 12v at the connector at the brake switch and it was good. I acquired some electrical prints and found that the 12v at the brake switch leaves there and goes through the Hazard/Turn switch before going to the tail/turn/stop light. The malfunctioning Hazard switch was causing the 12v signal from the Brake pedal switch from getting to the tail/turn/stop light. I pulled the Hazard cap off, and while depressing the brake pedal, I wiggled the top of the hazard switch and the brake lights came on momentarily. After figuring out which direction I moved the switch to get the brake lights to stay on (while still continuing to press the brake pedal) I forced a small piece plastic down beside the switch to force it constantly in the direction needed. The brake lights work now but this is only a very temporary fix. I am in the process of trying to find a replacement switch but I am afraid that this switch is intigrated with the Turn switch/headlight switch/wiper etc. and they want aroun $300 for the entire unit. I tried to remove the cover around the steering column but you need torx socket (not a torx bit) to remove 2 screws to get at the Hazard switch. I might be able to repair the switch. I will post further after this weekend.

Posted on Feb 26, 2010

  • daniel al Feb 29, 2012

    thanks. my 2001 GT had same problem. I just followed the same procedure above and wa-oh, my brake lights are back.

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