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2006 Chevrolet Cobalt - AC issues

My car A/C blower is not blowing but cool air comes out when im going down the road,and the blower,resistor and the fuses seem to be fine. What would be the problem and how much would it cost to fix?

Turn the ignition switch on.

Set the blower speed to high.

Reach under the passenger side of the dash, and rap on the blower motor with the handle of a screwdriver.

If the blower starts working, replace the blower motor.


I have replaced several resistors and wire harnesses on Chevy’s. The wiring gets hot right at where the big harness plugs into the resistor, and melts the plastic- making for a poor connection. Turn your a/c system on and wiggle the connector at the resistor and see if the blower engages. If so, check the wiring very carefully at the resistor, and I bet you’ll find it burnt looking.

If you do replace the resistor- buy the kit: resistor and harness. Replace them both, and it is likely cheaper to buy the kit with both pieces, rather than one or the other.

In fact, I had to replace one shortly after I made this post…