Low beam headlight don't work on a pontiac gran prix 2006

headlight switch

try swapping over a similar relay

Joe, It is very likely your LOW BEAM RELAY, they are ONLY $40 Auto Zone or other parts stores. I would have wasted almost a $1000 on parts and labor if my car was not under warranty for all the labor and parts GM certified mechanics wasted replacing a computer brain and the switch on left side of steering wheel. The switch they tried to make me pay for on my second attempt to fix it but but I freaked out on them. My low beams would just go out at any time, very dangerous. This is part # info you need when you go to parts store. You need GM part # 15016745 a.k.a R6100 Mine just says R6100 on the parts box. Look at your manual for its location in fuse box under the hood. It is so simple to replace, a 4 year old could do it. There is reference made on the net by some that Parts stores may tell you the part is a blower relay but ignore that, its for the low beam. Visit this post first to make sure this makes sense to you ok. if the link does not work search "07 grand prix low beam headlights shut off intermittently?" and you will find the forum with at least 20 people who have had this issue. All 06-08 grand prix's should be recalled
http://www.topix.com/forum/autos/pontiac-grand-prix/T30BFP69UH765355Q
I hope I have helped you out.

New relay is bad.

The Grand Prix uses separate bulbs for low beams and high beams. The low beams are located on the outer edge of the headlight assemblies while the high beams are located on the inner edge of the assemblies. With this in mind, locate the position of the burned out bulb prior to replacing it.

Things You

Your headlight switch is in the turn signal switch. You will have to replace the whole switch. But you may try to fix it, it's already broke. It's worth a shot. I fix these switches all the time.

mdsarnes, The first thing that I would check is the fuse for the low beams located in the engine compartment power distribution box. (Fuse box) GM does have a legend written right on the cover so you know which fuse to check. Also, when the low beams are on try and wiggle the connectors to each bulb. If these dont work, replace one bulb and see if it works. If it does then take the same bulb and try it on the other side. If you have a test light then you can test for power at the plugs before you purchase any bulbs. Good luck with this.

I'm having the same issue. I have changed the bulbs and fuses. I can't find a relay but I don't think that is the issue. Some other people have suggest the Dimmer Control Switch. I am working on that. Please let me know what you find out.

A loose ground wire to the headlight will keep it dim,Or a headlight adjustment will bring the headlight up.If you can have your headlight turned on a garage door or something at night,and then watch as you change your headlights from low beam to high beam which ones are higher.the last thing to verify is that your high beam headlights are not the plastic lens type that turn dull which cuts the light power.

1999 GRAN PRIX SE HOW DO I INSTALL HEAD LIGHT BULB