Heating and cooling
I have a 2000 GMC Sierra 1500 SLE standard cab. The temp control quit.
Was stuck on heat. I replaced the blend door actuator and I then had full
on heat, or full on cold, no adjustment in between. Also, the function was
now backwards. Full cool to get heat and full heat to get cool. I then
replaced control unit in dash. Didn't fix problem. Is there anything else
between control unit and blend door actuator that could be causing this???
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