<!-- from fixya rte -->Why Dont my power mirrors work ? - Cars & Trucks

for the horn check the horn relay (switch it out with another from the fuse box and try it to see if it works) for the mirrors check to see the switch is not selected to the center position this disables the power to the mirrors if the switch is set to right or left and still dont work check for power to the switch. there also may be a ground harness that is common to these items that may have come loose.

First, check all fuses to make sure that none are blown.

If the door lock switch works on the passenger side, then the drivers side door lock switch is probably faulty. Use a multi-meter to test the Drivers Side Door Lock Switch (Black and Pink/Light Green wires unlock the vehicle, and the Black and Pink/Yellow wires lock the vehicle)
If the switch is tested and found to be operating properly, you may have a faulty Body Security Module or Drivers Side Door Lock Actuator.

If neither of your Power Mirrors are working, you probably have a faulty Exterior Rear View Mirror Switch, Power Mirror Module, or blown Central Junction Box Fuse.

If none of your Power Windows are working, you probably have a faulty Accessory Delay Relay or a blown fuse in your Central Junction Box or a faulty Master Window Adjust Switch (all of the Power Window Switches feed through this Master Window Switch). If the Power Windows didn't stop working at the same time, you may have faulty Window Adjust Switches, or faulty Power Window Motors, this is very unlikely though. It would also be a good idea to inspect the wiring for any obvious damage.

I am currently having the same problem with my 2004 Blazer, after a little research I am going to try replacing the engine compartment fuse *** suggested. I will let you know if tis works.

You have hooked them up to the wrong power wire. They have to be hooked up to the power wire after the flasher control. The easist way would be to go in the engine compartment, find the back of the turn tignal, and conect the mirror power wire (red) to the power wire there. You may need more wire than what the side mirrors came with, but this would be the quickest solution

The doors locks and mirrors may be a blown fuse.

The window is simply a window lift motor that is either worn out and ready to go, or the tracks need cleaned and lubed...but most likely its the motor

Possible switch issue if both mirrors dont work, also check for power and ground to the switch, if you have power and ground, switch is suspect.

check for a good ground connection

hi there, sounds like the motor on the mirrors are burnt out, or hopefully, maybe they are just misalligned, you can take it to a shop, to have it looked at, should'nt be much, and make sure the switch to the mirror your tryin to shift is on the right one, alot of times the switch is not always in the position of the mirrors, some manufactures got that backwards./......hope this helps good luck....shia

The exterior mirrors:

• are controlled by power controls on the LH front door trim panel.
• are of a foldaway design.
• may contain turn signal indicators.
• may be heated when the heated back window glass is activated.
• may have a programmable recall memory option.

Driver Seat Module
The power driver seat and power exterior mirrors are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option.
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Power Exterior Mirror Operation
The power exterior mirrors are controlled by the DSM and are operational all the time, whether the ignition switch is on or off. Using the power exterior mirror switch, the driver can adjust the driver and passenger exterior mirrors four ways.
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Visual Inspection Chart Mechanical Electrical

• Exterior mirror(s)
• Interior mirror

• Central junction box (CJB) fuse
• Circuitry
• Exterior mirror control switch
• Exterior mirror motor
• Interior mirror
• Driver seat module (DSM)
• Memory set switch

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1. If the vehicle is equipped with memory exterior mirrors and the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel. Select the vehicle to be tested from the diagnostic tool menu.
   • Check to make sure the program card is correctly installed.
   • Check the connections to the vehicle.
• Check the ignition switch position.

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• The mirrors are inoperative

• Circuitry.
• Central junction box (CJB) fuse.
• Exterior mirror control switch.

check fuses & switches