Question about 2003 Chevrolet Tahoe

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How do i fix the compass/temperature light on the rear view mirror on a 2003 chevy tahoe it works only intermittently lately

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  • core00drill Jun 05, 2010

    the light in the mirror will sometimes work perfectly but has gotten progressively intermittently lit over the past couple of weeks. is there a bulb that may need replacement?if so how is the bulb replaced

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  • Chevrolet Master
  • 76,848 Answers

This light is not serviced separately from the mirror, the tiny bulb that lights the display is hard wired onto the circuit board of the temp compass display, u could try and take the mirror apart and find a replacement bulb possibly from Radio Shack, they may have it, but GM doesn't publish any specs on the bulb type or how to even go about removing it from the board, if u are not very careful u can destroy the circuit board and then the device is useless except as a rear view mirror.

Posted on Jun 05, 2010

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  • Master
  • 2,272 Answers

Check the fuse for the rear view mirror in the fuse panel.Also check the connection plug at the back of the mirror .Remove it and check properly.
check the wiring at the very top of the wires as they go into the roof panel.
There could be  a short in the wire that goes from the brown plug to the mirror. Start by following the wires from the junction block up. Remove the left IP cover at the fuse block, and the A pillar trim. Pull the top edge toward you and work it out. Disconnect the speaker. Follow the harness in there as well. The harness runs up the drivers A pillar. 
This has to be checked.

Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

Posted on Jun 04, 2010

  • raj somaiya
    raj somaiya Jun 05, 2010

    No the bulb is perfectly alright.Because in the bulb there is a thin tungsten filament.If the bulb is any time glowing then the filament is proper so bulb is not the issue.But yes the socket in which the bulb is placed has metal contact and the end of the bulb which fits in the socket is a metal part.If any of the socket or the end of the bulb is got rusted then this both the parts will not get connected properly so this problem can occur.Cleaning the rust at the end of the bulb as well as in the socket where bulb is fitted will help.Check out.Thanks.

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