Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Does the actuator repeatedly click click click....
What is the model of your 1999 Chevrolet?
Sorry for the delay. This is the temperature actuator, correct?
Was the battery disconnected when the radio was replaced?
Try disconnecting the battery again. Reconnect and then turn key on. Do not touch any a/c controls for two full minutes. Actuator should cycle to relearn the travel limits, then should stop. Let me know what it does.
Sounds good. Will look forward to your response.
The problem could be in the actuator, or in the electronic control in the dash. The actuator provides feedback to the control module so that the module knows the position of the actuator. The most likely problem is a failed feedback potentiometer within the actuator.
Yes, either disconnect the battery or pull the main HVAC fuse.