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  1. Very quick and simple possible solution for HVAC control and Calibration

    The 02-09 "How-To" and DIY Section
    I'm hoping this will help a few folks with HVAC/calibration issues. I recently had the control module to my heater motor fry. Upon fixing it I quickly realized I had other issues. The HVAC unit would only blow hot air on my feet and it would not switch to any other position. I went through many...
  2. Hvac issues

    The 02-09 "How-To" and DIY Section
    The blower motor in my 2005 trailblazer quit working. I went through and found that the harness was cooked on one wire and the resistor was shot so I went to the dealer and bought a new one. I went to the dealer because I found many different kinds out there and they confused me a bit. The...
  3. Drivers side vents not working after tire change

    General
    I just got new tires put on. Now my drivers side vents are not working?? :hissy::confused::mad:
  4. 2002 Envoy dash vent dilemna

    General
    Two weeks ago, I had the blower resistor changed because fan speeds 1 and 2 had quit working. That fixed that problem. Now, when I turn the knob to adjust the air flow through the vents, nothing happens. It seems to be stuck on the last position I had it on (top and bottom). Although the fan is...
  5. No Heat / Air blowing from front vents

    General
    2004 Envoy 6cyl 2wd - No heat coming from front vents when using the manual function - If I step through the options very slowly ie: defrost/ floor,front mix/ front then it starts blowing pretty good but if i touch the temp controller "increase temp from 75 to 85 degrees" it stops blowing...
  6. Please Help - Vents not working after AUX input install

    Audio and Electronics
    I just installed the PIE gm12-auxv2 aux input in my 04 TB LS. It is functioning fine however my main dash air vents no longer work. If I move the selection dial it will sometimes put some air to the feet but it mostly is stuck in the defroster vents even when it is set to full on the main dash...
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