The low beams of my 2006 pontiac grand prix don't work only high beams work

usually both lights don't go at once so it is probably the resistor on the same circuit, probably just a fuse or relay! get a wiring diagram for illumination and test the circuit with a DVOM, bet you just have a bad connection, or loose wire, bad relay.....

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.

do you hear the click of the dimmer switch when you move the lever if you do then the steel rod that goes from the lever to the switch itself is working and the switch is moving from the low beam to high beam circuit.if the blue dash indicator is on them power is coming out of the switch to the dash to operate the light.its possible that the dimmer switch may need to be adjusted a little if you don`t hear the click but moves enough to put the dash light on but not enough to turn the high beams on,that is possibly why the low lights stay on.or you have a bad dimmer switch itself

does that car have ground lights or fog lights it may not be your high beams coming on it may be your regular lights do you manually turn your high beams on or do they come on on there own

my friend ! is both beam wont work on low? if yes then check fues other wise some time its burn .so check it throlly ur car beams ....some time lights assambly have problem .so check that as well.
hope u ll get the soloution ....tc

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.

low beams dont work all other lights work

i would check your high and low beam relays one might be bad or a bad connection

Either the low beam head light bulbs have went out,or the dimmer switch has gone out.