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2003 Grand Prix Climate Control

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Old 11-08-2007, 05:32 PM
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Default 2003 Grand Prix Climate Control

My cousin'* car...he says that the blower used to work on the highest setting, now it doesn't work at all...also he says that he used to be able to switch between floor-defrost-vent, etc, and now that doesn't work either.

My first impression was that it'* the blower motor...but with the other thing not working i'm not so sure.

Where should I start?
Old 11-08-2007, 05:55 PM
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Not sure if it applies..but the 00 GP'* had a module that would frequently go bad and you'd loose all but high fan speed. Might start there and see if the blower motor is not burned out.
Old 11-08-2007, 06:17 PM
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If it'* an older car, it could be the resistor block. When they go bad, they tend to lose the lower speeds and the highest speed, since those circuits get the most use.
Old 11-08-2007, 06:28 PM
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my brother'* 98 gp had the blower motor resistor go bad and only had the high setting. replaced it and it was fixed.
Old 12-17-2007, 09:22 AM
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http://www.bonnevilleclub.com/forum/...ic.php?t=90643

Just went through the same thing with my brother'* 03 GP GT. Good links contained within.
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