2002 Chevy Tahoe Defrost Not Working. Air flow only vents through the defrost vents. The window has a safety switch that keeps the wiper, washer and heater from working if the window.
Web try something simple: Changing the vent control knob from floor, dash vents, and defrost vents. Then warm up your vehicle and see if the defroster starts working better.
Remove the floor air outlet duct extension (1) from the floor duct (2). It controls air flow out the vents. Web try something simple:
Ac blows through defrost and floor vents instead of ac vents. Web rear defroster not working on 2002 tahoe (double door) light on dash button comes on but windows not defrosting. Changing the vent control knob from floor, dash vents, and defrost vents.
You have a vacuum leak in the system that controls the vent doors. When the engine and radiator are cool, top up the coolant. The window has a safety switch that keeps the wiper, washer and heater from working if the window.
