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First take off the faceplate surounding the dash by removing the four torque-head screws in the corners. Then remove the four screws (2 on each side) that hold the heating control unit in place (It is a separate piece from the radio head unit). Pull it out far enough so that you can reach the wiring harness that plugs in the back and unplug it. You're done!

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โˆ™ 2011-09-13 06:01:40
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Q: How do you pull out and replace the temp control unit on a 1990 gmc sierra 1500 truck this control unit is one piece with both buttons for heating ac and amfm radio?
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