Fan only works at a spot between 4-5. When the fan is on, it turns off the AC. I swapped out the blower motor resistor but that didn't change anything. i checked all of the fuses.
I read about the ignition switch causing similar problems. From what I read though I should also be having daytime running light issues? Those are working fine. I have had an intermittent problem that when I plug in an OBD scanner it kicks on the security light and I have to reprogram the key.
I can get a new ACDelco lock cylinder and ignition switch from Amazon for about $100.
Anything else I should be looking at?
