We have a 2001 Chevy Tahoe with front and rear heating and a/c. Currently the hot air is not blowing out of the front even when the temp knob is turned to the hottest setting. I believe it may be the actuators. Where are the actators located and how can I get to them. Are they behind the glove box? I HAVE A 2001 TAHOE WITH THE SAME PROBLEM it blows cold air in the front when I have the heat on . I was wondering if the controls might be bad. the system for the back works great and gets hot. if it's not the controls is there something else that could keep it from switching to warm air?
Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.
SOURCE: 2001 tahoe front heater not working, rear heater blows warm air
I have the same problem with my 2001 Tahoe. The front blower is working, its blowing strong, but its cold air even with the temp setting as high as it can get. The rear blows hot air. The engine temp guage is at about 210ish which is close to being normal (220). I just replaced the thermostate a few months ago, I don't know if its bad again, or it I deluted the antifreeze too much and it frooze the heater core, or if the heater core just went bad. Any one know what the cause could be?
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I dont really need an exact temp reading but I do need to know if the air is definatly cold
blowing hot air in front and cold air in rear
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