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1991 GMC Sonoma Question: Dash lights and interior light went out.

 

Question

wbelisle, 2.5L 4 Cylinder, Kennett, MO, July 10, 2010, 23:50
 Enthusiast

I've checked the fuses on this and all is well on these. Any suggestions for testing purposes?

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, July 12, 2010, 09:05
     Master

    I would check the headlight switch and dimmer switch. It's best to have a wiring diagram to test these so you know which wires to check. You can get a good wiring diagram here: http://bit.ly/mitchell_repair_manuals_online
    You can use a test light but a voltmeter is preferable.
    Check the power wires that go from the headlight switch to the interior lights.
    Good Luck!

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    wbelisle, November 13, 2010, 21:07
     Enthusiast

    still no luck on this situation, Bret! All was checked, including the fuses....

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  • Answer #2

    Visitor, December 18, 2010, 23:22

    As far as interior lights,my '91 Sonoma has rubber grommets around the door switches that have deteriated,letting sand,dust,etc. get into switch.Just spray some lubricant in there & push in/out & see if dome light works.

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    Visitor, December 19, 2010, 01:56

    That's one thing I haven't checked....I'll try that...right now, I'm using a 'punch domelight' to light up the interior...so maddening...

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