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The Infamous HVAC Door Issue Strikes

Old 11-14-2015, 09:11 PM
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IDK if this will help, but after I did the doors in my mega, one of the motors stripped out a white plastic piece (like a spacer) and I had to remove the spacer to get it to work properly.

the stanchions were too tall with the white piece removed, so I had to trim them down, also, to get the motor directly on the HT door arm.
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Old 11-12-2017, 11:26 PM
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Check your A/C charge before you dig into the dash.

I thought I had a blend door issue on mine. I have the dual control unit and the passenger side would only go warm to hot with A/C on; driver's side seemed fine.

Turns out that I had a low A/C charge due to a leaking fitting and it affects the passenger side first due to the evaporator design. Quick fix and A/C is working great again. Glad I caught it before I toasted the compressor and drier.
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Old 11-23-2017, 11:13 PM
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Fixed mine

I had no defrost on my 03, I took the entire dash out & found a donar Laramie. Not as hard as you think. Replaced my box with the diner & made sure all doors & actuators were working. Also replaced my dash as it was cracked on top. Total time was 2 weeks but I had to find the cause first by removing the dash then realizing I wasn't going the route of replacing the doors I found the doner I truck.
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