Buy 2003 Chevrolet Express 3500 Base Extended Passenger Van 4.8L Vortec V8 A/T HVAC Blend Door. FRONT Air, Temp, Wrong, Out - OEM Chevrolet Part # 52494942

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

Fits Express 1500, Express 2500, Express 3500, Savana 1500, Savana 2500, Savana 3500

FRONT, Temp.
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 2003 Chevrolet Express 3500 is best left to technicians with factory training and expertise.