ac blows when car is off on 2005 GMC Envoy

my ac blows for like 30 seconds randomly after i turn the car off..... i dunno if its a feature the car has or not but im just wondering if it suppost to do that... i was thinking its a climate condition to keep the car at a regular temp but i dunno

by in San Jose, CA on September 29, 2010
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1 answer
ANSWER by , December 21, 2010
Hello Im Jeff with Fleettech, Your problem is probably the heater blower resistor. If you need any other help or service call 4085935358 we are located in Campbell 281 east mcglincy lane