So I'm having problems with my low beams, we took bulbs out and right now I have my fingers crossed hoping that it solves the problem. Ony\ly thing is, both lights quit working at the same time ....

Asked by Apr 26, 2016 at 04:48 PM about the 2007 Pontiac Grand Prix

Question type: Maintenance & Repair

Is it normal for both lights to go out at the same time? We're gonna try to replace the bulbs, keeping my fingers crossed

5 Answers


No, the only time I saw this happen was when an alternator's regulator went full field and shot 18 volts through the system, not only did it take out the headlights but everything that was turned on at the time including the computer. I suspect either a grounding problem or a short in the power circuit for the headlights that blew the headlight main fuses. HTH


I have also run into a situations where one light has been out awhile and the person just did not notice then when the other one goes out they think both has gone out the same time so it maybe just the bulbs need to be replaced.


I have a 2007 grand prix gt supercharged with the 3800 engine...both my low beams just quit working also. My husband checked the fuses and they were fine. Turns out the relay needed replaced. All is good now its a cheap $25 part and happens often to these cars!!

Has anyone had this happen with an 08? My car is currently going to the shop tomorrow for the same issues (potential computer issue) and I literally had my transmission rebuilt 2 weeks ago....trying to figure out if the car is even worth it at this point.


Did you replace the relay like they did above?

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