HVAC Blend Door. HVAC Air Door. HVAC Blend Door. HVAC Mix Door. Valve, Temperature.

HVAC Blend Door

Fits Sierra 3500 HD (2007 - 2007)

2003-07, temperature, #2. Temperature, #2.
HVAC Blend Door - Repair or Replace
In some cases, albeit relatively rare ones, a blend door in your HVAC system can break, causing air to come out of the wrong vents or at the wrong temperature, or not to come out at all. Properly diagnosing such a problem in your GMC Sierra 3500 HD is best left to technicians with factory training and expertise.