while in the heater/defroster setting my fan does not go to high speed. at times in may kick in for a few moments then goes back down, what is possible problem? the fan switch or what?
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2002 Chevrolet Avalanche 2500 Question: fan speed
Answer #1Oakman October 30, 2009, 09:44Master
The fan switch could be the problem with the HVAC blower of your 2002 Chevrolet Avalanche. The fault could also be the relay or a connection issue anywhere in the blower motor circuit. I complete diagnoses of the blower motor may be necessary to isolate the cause of your fault.