Question about 2004 Chevrolet TrailBlazer

2 Answers

Low beam headlights

When I start the car low beams will work. As I drive maybe a mile or two they will just turn off, I can flip the high beams on and they will work. I switch the high beams off and on and seems after driving for another mile or two the low beams will start working again.

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  • eric_quick1 Nov 01, 2008

    I have this same problem, while driving the head lights will just turn off. This was occuring for approximatelly one month, now the low beams will not turn on at all. I have checked all of the fuses, disconected the low beam light and hooked it directly to the battery and it turns on so it is not the bulb, I have also bought a new switch and installed it and the head light are still not working. Does Chevrolet know about this problem with the 2004 Trail Blazer or is it going to take someone getting seriously injured while driving for them to reconize this problem? Any ways sorry about that but I just want my headlights to work. I have exhausted all of my knowledge and need some help! Thanks

  • myanrain Feb 11, 2009

    Have the exact problem with my 2004 Trial Blazer.. any SUggestions..

  • goodbanking May 11, 2010

    When I start the car low beams will work. As I drive maybe a mile or two they will just turn off, I can flip the high beams on and they will work. I switch the high beams off and on and seems after driving for another mile or two the low beams will start working again.

  • Anonymous Mar 18, 2014

    high beams work but not the low beams

  • Anonymous Mar 20, 2014

    high beam works but not the low beam

  • Anonymous Mar 20, 2014

    wonk on low or high beam

  • Anonymous Mar 22, 2014

    lowm beams worrk high beams inop

  • Anonymous Mar 27, 2014

    high beams work but low beams not work

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Try swapping #45 cooling fan relay and #46 HDM (headlight driver module) relay in the underhood fuse block. These are solid state modules and are not like conventional relays.

Posted on Nov 21, 2008

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Thank you so much for the solution you added here my headlights went out last night an my husband was trying to figure out why and could not. I read this while he was working on my car and it worked. thank you again.

Posted on Mar 02, 2009

  • Taymas2 Apr 15, 2012

    YES!! This absolutely worked. Thank you so very much! It has been so frustrating trying to figure out what was causing this and the #46 HDM relay was the ticket.

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