Question about 1999 GMC Suburban

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Suburban 1999 abs light on dash on and doesn't work the a/c fan

My Suburban 1999, has a weird problem, every now and then, the ABS light on the dash comes on and that makes the fan of the a/c and defroster to stop working eventually it will make a strange "crack, crack" (electrical) noise and the light turns off and the fan starts working. When the fan knob is in "low" the abs light will turn on but when the knob is on "off" or 3 or five the abs light turns on and the "check 4wd" light will turn on too. As son as you move the knob to low or 4 position the ABS light remains on but the "check 4wd" turns off. Sometimes while I'm driving this "crack, crack" sound will come and everything goes to normal operation.
Hopefully someone can help because I've seen several electrical mechanics and have different ideas but they are not sure

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  • Angel Paz Jan 24, 2009

    I should tell that it is a Suburban 1999 2500 7.1 engine

  • Anonymous May 02, 2009

    This is exactly what is going on with our 2000 Escalade right now!



    How did you solve the problem?



    Robert

    Gilbert, Arizona

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If it is happening when you change the AC and Defroster Modes as Stated above, You have a Wire inside the Dash in this Location that has Shorted and is Grounding itselt to the Housing for the HVAC Controls. This could cause a fire. I would pull the HVAC Unit and try and Locate the Faulty wire Behind it.

Posted on Jan 24, 2009

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