Question about 1989 Chevrolet K1500

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I need to know why my heater control panel won't work on my 1989 silverado. Just stopped working I'm thinking it's the wiring any suggestions?

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  • bugabooracer Feb 26, 2009

    I have power to the fuse board and to the control panel but no lights on the display and no heat it's not any certain switch the whole shooting match is not working but still has power.

  • ccn7 May 11, 2010

    Did all the controls quit working? Or just certain ones like temp, switch, or selector switch, or blower switch?

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Same thing is happening to me on my 89 silverado c1500,
once in a while mine will make a clicking noise for a min or so. Tried cleaning contacts, checking wires and finally replacing the controller with two different ones from the wrecker with same result as the original. Any suggestions would be appreciated

Posted on Jul 02, 2009

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Also, check the contact pads on the plug side and control side. clean them with a standard pink eraser and wipe clean. be carefull, it is very thin plating on the board. smear a very light coat of dielectric grease on the contacts and try again.

Posted on Jun 20, 2009

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Usually if the controller becomes defective it will flash. It could be the wiring but if you have power to it then you need to confirm that it has ground. It will be under the dash, may be behind the pass. side interior panel below the dash.

Posted on May 11, 2009

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