2005 GMC Sierra 1500 Q&A
2005 GMC Sierra 1500 Question: Heater/Defroster
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it will not defrost
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored...
Air stuck blowing from floor and defrost only
air only comes out main vents, no defrost or floor when selected. 2003 1500 SLT.
heat defrost work only on passinger side.Recently went out of right passinger side only in middle.Thought it might be heater door actuator.I will admit I mixed anti-freeze this summer. SPEEDOMEETER...