Pontiac Repair: 99 Pontiac Grand Am headlights do not work, turn signal switch, high beams


Question
QUESTION: I have a 99 Pontiac Grand Am 6 cyl.  Tonight I turned on my car, and the running lights came on, but the headlights did not.  It was certainly dark enough - and the ALC never failed before.  I tried to manually turn them on using the turn signal switch - but no luck.  High beams and pass lights worked, as do the running lights, brake lights, fog lights and instrument lights.

ANSWER: Hey Jim:

It is possable that both lo beam bulbs burn out at the same time. Not very likley but it is possable. Yout going to have to unplug the bulbs and see if you have power and ground at the bulb connector with the lamps in the lo setting. If you do then you have bad bulbs. If not then you going to have to trace the loss of ground back into the car. On this car the head lamp switchc supples a ground path for the bulbs.

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QUESTION: Thanks for the answer.  I really appreciate it.  Trying to self diagnose, I saw that this had happened to other makes of cars - and the Relay was to blame.  Is there a low beam relay - and where would it be?

Thanks again.

Answer
there are 2 relays and 2 fuses for the headlamps they are all in the underhood fuse box. the fuses are maked lt head and rt head and the 2 relays are ALC and drl labeled or something like that. you can swap relays out to see if it fixes it. as long as the # stamped on the relay is the same you can swap them out.