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Re: Low beam headlight is out on 2008 i290
Most probably you are seeing a lot of clutter in the bonnet to put your hand in and change it right? The best way sometimes is to unbolt the headlamp , move it out change the bulb and back in. But another way would typically be to remove the battery (and battery holder plastic box) or air box (whichever is in the way) and then you should be able to access the headlamp cover from behind. Anyways in both cases you should find a metal clip holding the bulb. Unclip the bulb whilst making sure that you dont touch the new bulb with you hands while putting it in. Press its metal clip in place again. and be sure to mount the plastic cover at the back properly so no water goes in the headlamp if its raining.
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These trucks are known for bad multifuction switches. the switch that i talk of is the signal switch , the handle is the switch, it bolts to side of steering column . this switch controls the signals and the headlights and high /low beams. the other thing is the headlight switch connector, the connector some times goes bad and starts to melt or just comes out of the connector. you will need to remove the cover to steering column, the screws are located under the bottom cover in holes. remove cover and check connector and then test for power if you have power going into switch but not coming out then switch is bad.
the last thing is to make sure the bulbs are good , make sure the headlight bulbs are good , and also the driving light bulbs, test for power at the connectors to those lights to. You will need to do a little testing to find the problem.
it's easier to change the light bulbs in this car than in a lot of other vehicles. The 2008 pontiac 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. To replace the low beam of the headlight bulb You will be in need of these instruments(Soft blanket or towel, Latex gloves, 9006 replacement headlight (low beam)), please follow the steps below:
Open the hood to the 2008 Pontiac Grand Prix after making sure the headlight switch is in the off position, and the keys are not in the ignition.
Approach the headlight assembly with the spent headlight in it, and locate the retaining bracket (white) holding the assembly to the frame rail of the Grand Prix.
Lift the retaining bracket up about a quarter of an inch in order to align the notches of the bracket to the riveted tabs on the frame.
Pull the assembly forward away from the front of the car starting with the inner corner of the assembly toward the grill. Keep in mind the wire harness connection is still attached to the assembly, so only pull it far enough to reach behind and disconnect the plug located at the bottom of the assembly.
Place the headlight and bulbs assembly lens down onto a soft towel or blanket.
Disconnect the respective low beam or high beam wire harness.
Turn the plastic base of the headlight counterclockwise a quarter turn to align the retaining tabs with the release notches. Remove the headlight from the headlight assembly.
Put on latex gloves before handling the replacement low beam or high beam headlight. Oil from skin will compromise the life of the headlights if it contacts the glass bulb.
Insert the new bulb into the assembly by aligning the retaining notches to the release tabs, and then turn the base of the headlight 1/4 clockwise to lock it into the headlight assembly. Reconnect the harness to the headlight.
Bring the assembly back to the Grand Prix and reconnect the main wire harness at the bottom of the assembly.
Align the guide pins at the back of the assembly to the locating holes in the front frame rail starting with the outer guide pin first and the inner (toward the grill) guide pin last. Lift the assembly upward while pushing back on the lens to push down on the retaining bracket.
Place the key in the ignition and turn the key to accessory power.
Try this to eliminate new bulbs for both sides:
With a partner behind the wheel:
PULL out the bulbs one at a time. Keep them plugged in. While you are holding the bulb - have your partner click and HOLD the High Beam Selection. This causes the Low Beam and High Beam filaments to both go on and stay on.
Check both sides this way.
While the bulbs are out, look at the filaments that did not illuminate. Are they broken, bent, or have indications they are burnt out?
You can also change to bulbs (left to right, right to left) and recheck using the above method of holding the high beam selector and checking the filaments.