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03 GMC Envoy Fan blower and sunroof wont work and

03 GMC Envoy XL - Fan blower and sunroof wont work and ABS and Emergency Brakes light on! My husband checked all the fuses and they look good. He took it to AutoZone and they checks the alternator and battery-both fine... What happened?

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Hi there,

Fan Blower - First turn the fan on low or med then tap on the heater motor w/ a screw driver, if it try's to turn on or does turn on its the brushes in the motor (thus you need a new one). Second you can try testing the switch w/ an ohm meter to see if the switch is burnt out. If this doesn't fix it then your into relays and such.

Sunroof - There are cables on each side which pull the glass when moved in sync. The cables have slipped out of sync. The sunroof frame will have to come down and probably replace the cables. If you are handy, take the glass out, run the motor to the "closed" position. Remove the motor. Pushed the slides to the fully closed position and re-install the motor. If the cables are okay, this should put them back in sync.

Emergency Brakes light - It's used to indicate that the parking brake is "ON" and also to indicate that the brake fluid level is below minimum level. If your parking brake is indeed off then check the brake fluid level. If it is near minimum it will sometimes flicker on & off when your car goes up or down hill. With disk brake systems the fluid level goes down as the pads wear. By the time it gets to minimum it is a good bet you're about due for new disk pads. It's at least a good idea to have them checked. Replacing the pads will expand the calipers pushing the fluid back into the reservoir and curing the low level.

Its better to Do Some Maintenance on your car....
Good luck...
Thanks

Posted on May 14, 2009

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