Question about 2004 GMC Envoy

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I turn on my heater and the car bucks and shuts off

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More than likely, the throttle body needs cleaning. Grime builds up in this area and prevents the throttle plate from closing completely.

Posted on Sep 29, 2010

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BMW X3 AC only cool air on driver side

Being a 2006 BMW, I don't know if you really want to tear into the dash compartment. Your AC is working fine, the problem with the unit is your heater control valve under the dash is faulty. you cant fix it but replace it the cost with single solenoid 85 bucks and dual solenoid is 172 buck; your would have two because your car equip with his and hers climate control; without proper tools to work on the car taking the dash apart is a task especially you have to know every bolt location. The unit is not adjusting the valve like it suppose to. The valve work like and normal valve, same as your faucet at home on or off. the valve is not shutting off fully due to solenoid faulty or the valve it self is stuck,jam or not sealing and that is the reason why you still getting warm air. I can assure you if you turn the ac button off and let the fan run only you will get nothing but hot air, the air seem warm because is mixing with with the cold air from your evaporator. hope that help some, good luck

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Heater not heating

I would have the Thermostat replaced first of all. This the least expensive thing to start with. And just may be Your problem. And if not? And You do it Yourself. Then Your only out a few Bucks! Hope this may Help!

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1 Answer

Heater wont turn off

Replace the fan control module.

Feb 02, 2009 | 2001 Buick Century

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