2002 Buick century ac/heater control replacement

Asked by Mar 03, 2016 at 10:56 PM about the 2002 Buick Century Limited

Question type: Maintenance & Repair

I have a 2002 Buick century and the vent fan won't blow anymore. I have
replaced the resistor, and the vent fan itself and it hasn't solved the issue. My
next step is to replace the control unit. I'm really not sure where to start to get
at it. Any advice would be helpful!!!!

1 Answer

635

I answered a similar question about a year ago, and added that answer below: It could be that you have a bad blower speed switch (on panel below radio), or a bad blower motor. Remove the speed switch from the dash (leave wiring harness on) and while the ignition key is in the "on" position, test (with a multi-meter set on DC) for 12V voltage at the blue, yellow, and tan wire connections. If no voltage is detected, then check for continuity between the brown wire in the wiring harness and each of the other wire terminal connections on the back of the switch, as the switch is run through its speed selections. If still no voltage, the switch is your culprit, otherwise switch your focus to the blower motor. If the blower motor is found to be defective, it should be replaced as a set with the blower motor resistor.

Your Answer

Add photo

Related Questions

Search Buick Century Questions

Buick Century Experts

#1 John Saffrahn
John Saffrahn
Reputation 850
#2 Tom Demyan
Tom Demyan
Reputation 670
#3 John Pate
John Pate
Reputation 330
View All

Related Models For Sale

Used Buick LeSabre
9 Great Deals out of 2,332 listings starting at $1,768
Used Buick Regal
203 Great Deals out of 10,801 listings starting at $2,195
Used Chevrolet Impala
919 Great Deals out of 36,142 listings starting at $1,800
Used Buick Park Avenue
504 listings starting at $3,975
Used Honda Accord
1,165 Great Deals out of 77,422 listings starting at $969
Used Ford Taurus
353 Great Deals out of 22,220 listings starting at $1,499
Used Toyota Camry
1,439 Great Deals out of 99,762 listings starting at $700
Used Chevrolet Malibu
1,093 Great Deals out of 78,493 listings starting at $2,495
Used Nissan Altima
1,092 Great Deals out of 85,233 listings starting at $695
Used Chevrolet Monte Carlo
24 Great Deals out of 1,730 listings starting at $1,695
Used Honda Civic
1,122 Great Deals out of 64,641 listings starting at $1,195
Used Pontiac Grand Prix
20 Great Deals out of 3,715 listings starting at $1,995