Question about 2002 Chevrolet TrailBlazer

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Electrical low-beam headlight wire on 02 Chevy Trailblazer burnt

Headlight went out, but then came back on. Went to replace low beam light bulb, and noticed burning smell. Pulled bulb out and noticed that three prongs in bulb housing, and wiring that it plugs into, was bunt. How do I replace wiring? i have an '05 trailblazer & this just happened to me. going to the dealership tomorrow.

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Get yourself to a junkyard and pack yourself a light lunch while you're at it. Take a leisurely stroll through the junk that closely resembles the one you need parts for. Go to the closest wiring harness to the headlight assembly, take your time and don't go trying to **** it, and unplug it from the bulbs up front. Make a simple and straight forward swap and do take the time to stop and smell the junkers, it's quite relaxing! Then, you should seriously make sure your new wiring harness is properly grounded (!), which I suspect to have been a contribing factor to your problem of overheating the bulb socket. Do take the time to go over the stuff that should be grounded and make it so. Th e job is quite simple and well worth you taking the time to do it yourself.

Posted on May 27, 2009

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1 Answer

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1 Answer

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1 Answer

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1 Answer

2004 Chevrolet Trailblazer


First face the vehicle so the battery in on the right.
Second open hood.
Third Remove the Grill by pushing firmly on two retainer clips that are on the top, use the wide slot screwdriver to get the rest of the clips off. Pull up gently on the grill it should then pop out. The grill extends under each headlight assemblymag-glass_10x10.gif any other retainer clips should release when the grill in popped out.
  • Step 2 Fourth on top of the headlight assembly you will see one 1" tab on the right and left side, pull the tabs upward about two inches and this should release the headlight assembly. You then should be able to pull the headlight assembly out toward you.
  • Step 3 Finally at the back of the headlight assembly you will see two rubber caps one for low beam and one for high beam, the white base is for the low beam and the black base is for the high beam. Unsnap the wire harness from the bulb base, turn the bulb clockwise.

    Replace the bulbs high beam on the outside and low beam on the inside.
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    Simple! (I have the same model as well) Pop off the front chevy grill - it's held on with spring clips. Then look at the headlight assembly - there are 2 slide clips on either side, near the top - they have a tab that is bent forward - lift them UP. It may take a little force as they are usually stiff. The headlight assembly can then be pulled off the car, and the bulbs replaced.

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    your pigtail to the headlight might be burnt. I had the sme trouble on mine. Dealer sells them for about 30.00

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