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Heating and AC

Discussion in 'General Chevy & GM Tech Questions' started by ebollard, Jun 1, 2008.

  1. ebollard

    ebollard New Member

    1986 gmc sierra 2500 5.7 350


    Recently i have noticed that the HVAC in my truck has been blowing a little bit even when off. Also it reacts with my throttle. the harder i press the gas, the harder it blows. even when off. far as i know this just started happening and i dont think its normal.

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