Question about 2004 Chevrolet Silverado

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A/C and Heat Driver Side Intermittent Problem

2004 Chevy Silverado 2500 - DRIVER SIDE ONLY

During the summer, the A/C blows hot. This problem is intermittent. Sometimes, the A/C works properly.

During the winter, the Heat blows cold. This problem is also intermittent. Sometimes, the Heat works properly.

The Passenger side ALWAYS works properly.

What could be the problem?

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  • 2 more comments 
  • Anonymous Jan 14, 2009

    my heat coil is leaking

  • bclark84 Jan 22, 2009

    I took my 2004 Crew Cab to the dealer and they said the motor for the vent closest to the radio was about to die. In the summer it blows like I'm stuck in hell, but in the winter it blows out cold air like I'm at the North Pole. The dealer said it was about $250+ to fix it, so I will suffer for now

  • ahibian Feb 03, 2009

    I have similar problem. In winter passenger side has heat but driver side is only blowing cold air. Fan works so can regulate more or less cold air. Is there a diagram or such to help locate and fix problem by myself. Is there a Manual or schmatic of vehicle heater system to identify part to order and how to remove panels.

  • s3ranger Apr 04, 2009

    Same thing happens to me with the heat in the summer time. Drivers side only. No Idea what it is.

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  • 29 Answers

You will need to replace your driver side temp actuator. It is most likely sticking or over travelling. It is located under the dash directly below the a/c control head. It is bolted to the a/c box upside down with two small bolts. Let me know if i can help more.

Posted on Jan 02, 2009

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