Shop 2003 GMC Sierra 3500 HVAC Blend Door. 2003-07, temperature, #1. Temperature, #1. HVAC Blend Door - OEM GMC Part # 89023354 (89022566)

2003-07. HVAC Blend Door. Temperature #1. HVAC Air Door. HVAC Blend Door. HVAC Mix Door. Valve, Temperature.

HVAC Blend Door

2003-07, temperature, #1. Temperature, #1.
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 is best left to technicians with factory training and expertise.