My electric outside mirrors don't work, - 2002 GMC Sierra

What were you doing when everything quit? Jump Start your Car?

Outside Mirrors REMOVAL & INSTALLATION

1. Disconnect the negative battery cable. NOTE: This procedure is for power mirrors. The procedure for a manual mirror is the same with the exception of the lack of electrical wiring.
   
2. Remove the door trim panel, plastic fasteners from the sound insulator and water deflector, as required.
3. Unfasten the retainer, then remove the mirror trim panel. Fig. 1: The outside mirror has a trim panel which is secured with a screw and a retaining clip
   Fig. 2: Unfasten the retaining screw . . . Fig. 3: . . . then remove the mirror finish panel. Note the panel retaining clip (see arrow)
   
4. Disconnect the wiring connector and remove the wiring from the door retaining tabs. Fig. 4: Exploded view of the outside mirror cable routing
   
   
5. Remove the mirror retaining nuts/screws, then remove the mirror with insulator and wiring. Fig. 5: Pull the sound absorber filler pad out of the door Fig. 6: Unfasten the side view mirror retaining nuts and bolts Fig. 7: Exploded view of the outside mirror assembly mounting
   To install:
   
6. Refit the mirror with insulator and wiring into position.
7. Install the mirror retaining nuts/screws.
8. Route the wiring through the door retaining tabs and reconnect the electrical connector. Make certain the wiring harness does not interfere with the window glass operation.
9. Install the water deflector, sound insulator and door trim panel, as required.
10. Connect the negative battery cable.

glass and motor availbable separately

Removal
NOTE: Do not remove the mirror assembly when repairing the individual mirror part. Individual mirror parts can be installed without removing the mirror assembly.

1. Remove the front door trim panel; refer to Section 501-05.

1. Remove the outside rear view mirror access water shield.

1. Remove the speaker.
   1. Remove the screws.
   1. Disconnect and remove the speaker.

1. Disconnect the outside rear view mirror electrical connector.

1. Remove the outside rear view mirror.
   1. Remove the nuts.
   1. Remove the outside rear view mirror.
      • Feed the outside rear view mirror wiring through the opening in the front door.

Power windows an locks work ok ? Do you know anything about automotive electeronic control modules ?
Power Mirror System
Power Mirror System Components
The power mirror system consists of the following components:
• Driver Door Switch (DDS)--An electronic control module with integrated switches and requires programming when replaced
• Passenger Door Switch (PDS)--An electronic control module with integrated switches, requires programming when replaced
• Power Mirror Direction Switch--Integrated into DDS and is a 4 position momentary switch that provides a signal input to the DDS for up, down, left/extend and right/retract with a mirror switch activation
• Mirror Select Switch--Integrated into DDS and is a 3 position switch that allows the operator to select the left or right mirror and also a neutral/fold position
• Left Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Right Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Body Control Module--An electronic control module that requires programming when replaced, serves as the power mode master and is the main message handler
• Memory Switch, if equipped with memory mirrors--Supplied power by the DDS and provides a voltage signal to the DDS upon a switch activation
• Horizontal and Vertical Position Sensors, if equipped with memory mirrors--Supplied a 5-volt and low reference by the DDS/PDS and provide a variable voltage signal to the DDS/PDS that is proportional to mirror position
• Powertrain Control Module (PCM), if equipped with memory mirrors--An electronic control module that requires programming when replaced and provides the message indicating transmission gear selection
• Driver Information Center (DIC), if equipped with memory mirrors--Part of the instrument cluster which is a an electronic control module that requires programming when replaced and is used to personalize the memory recall functions
• Fold Motor, in each of the outside mirrors, if equipped with power fold mirrors--Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly
Each of the outside power mirrors contains 2 reversible motors to provide horizontal and vertical movement of the mirror glass. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. If equipped with power folding mirrors, each outside power mirror will contain a reversible fold motor to operate the extend and retract functions. Each of the mirror motors are circuit breaker protected.

Do you know what DTC'S - diagnostic trouble codes are ?
DTC B1023
Circuit/System Description
The driver door switch (DDS) and front passenger door switch (PDS) each contain switches that control power door lock and window functions. The DDS also contains the control switch for the power outside rear view mirrors. These switches are integrated within the door control modules and are not serviceable as separate components. The DDS and PDS monitor these switch inputs for internal faults and set B1023 00 if any are detected.

You could have any number of problems an without testing , hooking up a scanner that can check DTC'S in the door module ,electrical circuit testing etc... we'd only be guessing . Your best bet mite be to take it to a qualified repair shop.

here's 1996, all I have. Please rate.

Mirror, Power — Outside Rear View NOTE: This procedure applies to both RH and LH power outside rear view mirrors.

Removal

1. Remove the front door trim panel (23942). Refer to Section 01-05 for the removal procedure.
   

1. Remove the two outside rear view mirror inside mounting hole cover screws and the outside rear view mirror mounting hole cover (17K709) from the front door (20124).
   
   
   
   
   

1. Remove the wire clip.
   

1. Disconnect the power outside rear view mirror electrical connector.
   
   
   
   
   

1. Remove the three power outside rear view mirror bolts and the power outside rear view mirror.
   
   
   
   
   

Installation
To install, reverse the removal procedure. Tighten the three power outside rear view mirror bolts to 3-4 Nm (27-35 lb-in). Glass, Outside Mirror
Removal and Installation
Refer to the glass replacement procedures in Manual Mirror for power outside rear view mirror glass (17K707) Trim Cover
Removal

1. Remove the front door trim panel. Refer to Section 01-05 for the removal procedure.
   

1. Remove the two outside rear view mirror inside mounting hole cover screws.
   
   
   Remove the outside rear view mirror mounting hole cover.

Installation
To install, reverse the removal procedure. Mirror Control
Removal

1. Use a small flat-blade screwdriver to pry the power outside rear view mirror control switch from the instrument panel (04320).
   
   
   

remove trim panel, remove mirror fasteners.

Glass, Outside Mirror—Town Car

Removal and Installation

1. Push upper edge of outside rear view mirror glass (17K707) into the outside rear view mirror to expose latch release.
   

1. Using a small flat-bladed screw driver or equivalent, move latch release to released position.
   

1. Remove outside rear view mirror glass mounting back and outside rear view mirror glass from outside rear view mirror.
   

1. Disconnect heater wire connectors and auto dimmer connector, if equipped.
   

1. To install reverse Removal procedure.
   

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Mirror, Power—Outside Rear View
Town Car

Removal and Installation

1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
   

1. Remove front door trim panel (23942). Refer to Section 01-05 .
   

Trim Panels, Door Front—Town Car
Removal

1. Snap out two door pull strap retaining screw covers. Remove screws.
   

1. Remove three screws on front and rear side and center of front door trim panel (23942).
   

1. NOTE: The following procedure must be used during removal and installation of the door armrest and trim panel. Refer to the appropriate illustrations for component and vehicle model identification.
   
   Using the Trim Pad Removing Tool from Rotunda Windshield and Moulding/Trim Removal Kit 107-R0401 or equivalent, pry the trim panel retaining clips from the door inner panel.
   

1. NOTE: Do not use front door trim panel to remove trim clips from door inner panel. Replace any bent, damaged or missing push pins.
   
   Remove window regulator control switch housing from front door trim panel. Lift up housing in front and disconnect all connectors.
   

1. Disconnect wiring harness and heated seat switch electrical connectors if equipped.
   

1. Remove the door trim panel.
   

1. Disconnect two electrical connectors.
   

1. Remove nut from outside rear view mirror mounting base.
   

1. Swing outside rear view mirror (17682) toward driver door window glass to expose screw in mount base.
   

1. Remove screw from outside rear view mirror base.
   

1. Remove outside rear view mirror from front door (20124). Guide wiring and connectors through hole in front door.
   

1. To install, reverse Removal procedure. Tighten nuts to 8-10 Nm (71-88 lb-
   

Check your harness on the driverside, between the door and the body frame. The harness sometimes get spliced by the hole in the frame. This would cause the electronics wires to touch (sometimes work/ sometimes don't). GL.

Outside Mirrors REMOVAL & INSTALLATION The mirrors on these models can be removed from the door without disassembling the door liner or other components. Both left and right outside mirrors may be either manual, manual remote (small lever on the inside to adjust the mirror) or electric remote. If the mirror glass is damaged, replacements may be available through your dealer or a reputable glass shop in your area. If the plastic housing is damaged or cracked, the entire unit will need to be replaced. Manual

1. Remove the set screw and the adjustment knob, if equipped.
2. Remove the delta cover; that's the triangular black inner cover. It can be removed with a blunt plastic or wooden tool. Don't use a metal prytool; the plastic will be marred.
3. Fig. 1: Use a tapped ended tool to pry the trim from the mirror
   
   
4. Depending on the style of mirror, there may be concealment plugs or other minor parts under the delta cover — remove them.
5. Support the mirror housing from the outside and remove the three bolts or nuts holding the mirror to the door.
6. Remove the mirror assembly.
7. Installation is the reverse of removal.
8. Power
   1. Turn the ignition key to the OFF position. Disconnect the negative battery cable. Wait at least 90 seconds from the time the negative battery was disconnected to start work. CAUTION
      Some models covered by this manual may be equipped with a Supplemental Restraint System (SRS), which uses an air bag. Whenever working near any of the SRS components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SRS, as described in Section 6.
      
   2. Remove the delta cover; that's the triangular black inner cover. It can be removed with a blunt plastic or wooden tool. Don't use a metal prytool; the plastic will be marred.
9. Depending on the style of mirror, there may be concealment plugs or other minor parts under the delta cover — remove them.
10. Depending on the type of door trim, you may need to remove the door inner panel to access the electrical wiring harness for the mirror.
11. Support the mirror housing from the outside and remove the three bolts or nuts holding the mirror to the door.
12. If the wiring to the electric mirror was not disconnected previously, detach it now. Some connectors can only be reached after the mirror is free of the door. Remove the mirror assembly.
13. Installation is the reverse of removal. Cycle the mirror several times to make sure that it works properly.

are you trting to tighten the mirror glass or the mirror where it attaches to the body? I don't think glass is removable in 99. Only can try to press on glass to seat if unseated. not too hard.

1. Remove the front door trim panel; refer to Section 501-05 .
2. go to car-part.com for a used mirror. Page with * is cheapest seller.

1. Remove the speaker.
   1. Remove the screws.
   1. Disconnect the electrical connector.
   1. Remove the speaker.

1. Remove the outside rear view mirror (17682).
   1. Disconnect the power mirror wiring clips.
   1. Remove the outside rear view mirror nuts.
   1. Remove the outside rear view mirror.
      • Feed the power mirror wiring through the opening in the front door (20124).

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SECTION 501-09: Rear View Mirrors 2001 Explorer/Mountaineer Workshop Manual
REMOVAL AND INSTALLATION Exterior Mirror Glass, 2001 model Removal
NOTE: Exterior mirror glass is serviceable only on vehicles built after July of 2001.
NOTE: Passenger side exterior mirror shown, driver side exterior mirror similar.
All mirrors

1. Position the glass in the full up position.

1. Locate the notch at the bottom of the exterior mirror glass.

1. Release the exterior mirror glass.
   1. Insert a long flat-bladed screwdriver in the notch.
   1. Push the screwdriver into the notch until the glass is released.

Heated mirrors

1. Position aside the exterior mirror glass.

1. Disconnect the electrical connectors.

All mirrors

1. Remove the exterior mirror glass (17K707) passenger side or (17T675) driver side.

Installation
Heated mirrors

1. Connect the electrical connectors.

All mirrors

1. Position the exterior mirror glass on the exterior mirror motor.

1. Place a hand against the back of the exterior mirror housing and a hand flat against the exterior mirror glass. Press the glass in place until fully seated.

1. Remove the front door trim panel (23942) ; refer to Section 501-05 .
   • Peel back the watershield.

1. Remove the rear view mirror mounting hole cover (17K709).

1. Disconnect the power mirror electrical connector.

1. Remove the outside rear view mirror (17682).
   1. Remove the screws.
   1. Remove the outside rear view mirror.

please rate as fixya if this works for you.