Question about 2004 Pontiac Grand Prix

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2003 grand prix blower control only works on 5, no heat.

My blower will only work on high setting (5) and even then the heater does not get hot. It stopped working completly and I found a bad fuse in the fuse box behind the glove compartment labled as HVAC HI. I replaced this and it began working again, but only on high (5) and still no heat. Help!!

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  • 118 Answers

You got two diff problems or more poss hvac control head, bad blower resister, bad thermostat, low on coolant, or plugged heater core

Posted on Oct 11, 2009

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I had a problem like this on my 1999 grand prix gt. My headlights would cut out on any setting less then high (5), and my re-defroster wouldn't work. After ALOT of research I found out the it is the ignition wiring harness. I went to Advanced auto and they got me that for i think around $100ish. I hope this helps

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