Question about 2006 Chevrolet Trailblazer Ext

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The low beams in my 2003 chevrolet trailblazer will not come on. I have replaced the bulbs but still nothing. Whatcan I try?

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  • Chevrolet Master
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It's your #46 relay in the fuse box. Try switching #45 and 46 (same relay), if you now have lights,get a new relay. Common problem

Posted on Nov 23, 2010

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Posted on Jan 02, 2017

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Issues with 2003 Chevrolet TrailBlazer


low beam will go out automatically whem brigt beams click on

Sep 17, 2012 | 2003 Chevrolet TrailBlazer

1 Answer

No lowbeam headlights...bulbs have been replaced but still no lowbeam


The 2003 Trailblazer has separate fuses for each headlight. Check the fusebox under the hood near the battery. A complete diagram showing you where the low beam fuses are can be found in your vehicle owner's manual.

Nov 27, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

How do I change the lowbeam bulb on a 2003 Chevy Trailblazer?


Behind the low beam and high beam lamps, on the back of the assembly, you can see and feel a round, cup-like, hard plastic piece. This is really just a rubber cap covering a plastic cylindrical housing, and is the "back-door" for lamp access.
This rubber cap, or lid, can be pulled off with your fingers...if you can grip it just right and pull off. If this is too hard to do, then take a flat tip screwdriver and gently "pry" it off.
Then twist the bulbs counter clockwise about a quarter turn.

If you are going to replace the passenger side low beam remove the air cleaner assembly first. To do this remove the cross brace, then the 3 screws on the air cleaner assembly. This will give you easy access to the bulb assembly. Test the bulb before you reassemble.

Oct 14, 2009 | 2003 Chevrolet Trailblazer Ext

1 Answer

How to change front headlamp bulb? Low beam


  1. Open the hood.
  2. Remove Grille.
  3. Remove the 2 retainers on back of headlamp assembly and remove the headlamp from the sheet metal panel.
  4. Remove the access cover from the rear of the headlamp.
  5. Disconnect the electrical connector from the socket.
  6. Rotate the bulb and socket counter clockwise in order to remove the bulb and socket from the housing.
  7. Disconnect the electrical connector from the socket.
  8. Remove the bulb and socket from the headlamp.
Installation Procedure Important: • Replace a high beam bulb with another high beam bulb. The high beam bulb has a black socket. • Replace a low beam bulb with another low beam bulb. The low beam bulb has a gray tip and a grey socket.

Oct 14, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

How do change a low beam bulb on a 2003 Chev Trailblazer?


you pull it out from back or screws on front and take out whole ***.

Sep 30, 2009 | 2002 Chevrolet TrailBlazer

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.
  • Jun 19, 2009 | 2004 Chevrolet TrailBlazer

    1 Answer

    Low beam out dont want to take my whole grill apart


    Remove the bulb from under the hood by rotating the nut counter clockwise. Remove the bulb using a gloved hand and try not to touch the bulb. Replace with the like number bulb by NOT touching the bulb with your bare skin as the oils in our skin can destroy the light bulb. Re-install in the same way it was taken out.

    May 21, 2009 | 2003 Chevrolet TrailBlazer

    1 Answer

    No low beams


    Possible dimmer switch problem.

    May 07, 2009 | 2003 Chevrolet TrailBlazer

    1 Answer

    Head light bulb replacement 2003 chevy trailblazer


    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.

    Apr 18, 2009 | 2002 Chevrolet TrailBlazer

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