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TheMasterTechSource, Senior Automotive Consultant
Category: Car
Satisfied Customers: 211
Experience:  ASE Master-37 YRS- Master Certified Tech and a Fixed Operations Specialist
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95 Pontiac Bonneville ssei: 30 starts blowing cold air

Resolved Question:

I have a 95 Pontiac Bonneville ssei. The heater only works when the car is shut off, then started back up. It will blow heat for about 30 seconds, then the temp on the heater panel starts blinking, and the car starts blowing cold air.
Submitted: 8 years ago.
Category: Car
Expert:  TheMasterTechSource replied 8 years ago.

This is most likely caused by the ATC control head assm--Please make sure the blower motor assm is functioning properly and also that it does not stop when it gets hot--if you know this is not the issue--you can get a used Automatic Temperature Control Head assm at the local salvage yard or call XXXXX XXXXX at(NNN) NNN-NNNNhe can ship one out to youWink

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