Question about 2003 Pontiac Grand Prix
HEATER/ AC CONTROL SWITCH ONLY WORKS ON 5
If you have replaced the resistor and it didnt fix the problem replace the ignition switch.
Posted on Sep 16, 2009
Change the A/C resistor module underneath the passenger side glove box. I paid approx. $50 at Napa for this part and fixed it myself.
Posted on Aug 27, 2009
Try replacing the fan resistor.
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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