Grand Prix climate control problem

1999 PONTIAC GRAND PRIX
167,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DMTOUPIN
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  • 1 POST
I have a 1999 Pontiac Grand Prix with 3.1L motor. The climate control fan does not work on the lower settings (1 and 2) and makes a loud noise after 30 seconds on the higher settings (3, 4, and 5). I turn off the fan and the noise goes away. I turn it back on and it returns after 30 seconds. When it is making the noise, the fan quits working. Any suggestions?
Aug 15, 2011 at 11:27 PM
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PROTECH1980
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  • 901 POSTS
I think you have two problems, first you have a bad blower motor resistor (fan only working on 1 n 2). Second problem, you either have a bad blower motor, broken fan cage, or obstruction in air duct next to fan making noise. Replace resistor and pull fan out and inspect, replace if necesary.
Aug 16, 2011 at 2:20 AM