Mirrors - Power Cadillac Brougham I

DESCRIPTION & OPERATION

On all models except Riviera and Corvette, power operated side view mirrors are controlled by a switch on armrest for driver's mirror and a switch on instrument panel for passenger's side mirror.

On Riviera, driver's door switch controls both mirrors, with selector switch in base of control switch determining which mirror is operated. On Corvette, switches are located on center console next to driver.

Cadillac, Corvette and Reatta models also have a power mirror heating system which operates in conjunction with rear window defogger. When defogger is turned on, mirror base heats up through ground lead soldered to it. A thermistor in wiring circuit interrupts current flow when mirror base reaches 158°F (69°C) and turns off power to mirror.

Each power mirror assembly has 2 reversible motors. One motor moves mirror up or down, and the other moves mirror left or right. The voltage applied to motor terminals determines the direction mirror motor turns. When a mirror reaches its mechanical limit of travel, a self resetting circuit breaker opens the mirror control circuit to protect each motor from overload.

Bonneville, Cutlass Supreme, Eldorado, Grand Prix, Reatta, Riviera & Seville

1. With outside mirror switch connector connected, mirror selector switch in left position, and mirror position switch in up or down position, connect voltmeter between Yellow and Light Green wires. Battery voltage should be present. If not, replace outside mirror switch.
2. Hold mirror position switch in left or right position. Connect voltmeter between Light Blue and White (White/Black on Cutlass Supreme and Grand Prix) wires. Battery voltage should be present. If not, replace outside mirror switch. If all voltages were correct from steps 1) and 2), check connectors and wires. If all are okay, replace left outside mirror drive unit.
3. With mirror select switch in right position, hold mirror control switch in up or down position, connect voltmeter between Yellow and Purple/White (Light Green on Bonneville, Cutlass Supreme and Grand Prix) wires. Battery voltage should be present. If not, replace outside mirror switch.
4. Hold mirror position switch to left or right position. Connect voltmeter between Light Blue and White (White/Black on Cutlass Supreme and Grand Prix; Red/White on Eldorado and Seville) wires. Battery voltage should be present. If not, replace outside mirror switch. If all voltages were okay from steps 3) and 4), check connectors and wires. If all are okay, replace right outside mirror drive unit.

Camaro, Firebird, Regal & 6000

1. Operate right side mirror and check voltage at right side mirror switch (connector connected). Hold mirror position switch in up or down position. Yellow and Light Green/Black wires should have 12 volts. If not, replace outside mirror switch.
2. Hold mirror position switch in left or right position. White/Black (White on 6000) and Light Blue wires should have 12 volts. If not, replace outside mirror switch. If voltages are correct from steps 1) and 2), check wire connectors. If okay, replace the right outside mirror drive unit.
3. With outside mirror switch in left position, check voltage (connector connected) at Yellow/Light Green (Yellow on Regal and 6000) and Light Green (Light Green/Black on 6000) wires. Voltmeter should read 12 volts. If not, replace outside mirror switch.
4. Hold mirror position switch in left or right position. Check voltage at Light Blue and White (White/Black on Regal and 6000) wires. Voltmeter should read 12 volts. If not, replace outside mirror switch. If voltages are correct from steps 3) and 4), check wire connectors. If okay, replace the left outside mirror drive unit.

Caprice, Custom Cruiser, LeSabre & Safari

1. Disconnect outside mirror switch connector. Check voltage between Orange wire and ground. Battery voltage should be present. If not, check Orange wire for open circuit.
2. Connect voltmeter between Orange and Black wires. Battery voltage should be present. If not, check Black wire for open circuit. If voltages were correct from steps 1) and 2), proceed to next step.
3. Reconnect outside mirror switch connector. Hold outside mirror switch in up or down positions. Connect voltmeter between Yellow and Light Green wires. Battery voltage should be present. If not, check wires for open. If okay, replace outside power mirror switch.
4. Hold outside mirror switch in right and left positions. Connect voltmeter between Light Blue and White wires. Battery voltage should be present. If not, check wires for open. If okay, replace outside power mirror switch. If from the above steps, all voltages were correct, replace the suspect drive unit.

Century, DeVille, Delta 88, Electra, Fleetwood & Ninety-Eight

1. With mirror select switch in left position, control switch connector connected, and mirror position switch in up or down positions, connect test light between Yellow and Light Blue (Light Green on Electra) wires. Test light should come on. If not, replace outside mirror control switch.
2. Hold mirror select switch in left or right position. Connect test light between White and Light Blue wires. Test light should come on. If not, replace outside mirror control switch. If results from steps 1) and 2) were correct, check wirings and connectors for shorts or opens. If all are okay, replace left outside mirror drive unit.
3. With mirror select switch in right position, hold mirror position switch in up or down position and connect test light between Yellow (with Black tracer on Century) and Light Blue (with Black tracer on Century) wires. Test light should come on. If not, replace outside mirror control switch.
4. Hold mirror select switch in left or right position. Connect test light between White/Black and Light Blue (with Black tracer on Century) wires. Test light should come on. If not, replace outside mirror control switch. If from steps 3) and 4) results were correct, check wirings and connectors for shorts or opens. If all are okay, replace right outside mirror drive unit.

Corvette

1. Disconnect left outside mirror assembly connector. With mirror select switch in left position and mirror adjuster control in up or down position, check voltage between Yellow and White/Black wires. Battery voltage should be present. If not, check Yellow wire. If wire is okay, replace left outside mirror assembly.
2. Hold mirror adjuster control in left or right position. Check voltage between White and White/Black wires. Battery voltage should be present. If not, check White wire. If wire is okay, replace left outside mirror assembly.
3. With mirror select switch in right position and mirror adjuster control in up or down position, check voltage between Light Green and White/Black wires. Battery voltage should be present. If not, check Light Green wire. If wire is okay, replace right outside mirror assembly.
4. Hold mirror adjuster control in left or right position. Check voltage between Light Blue and White/Black wires. Battery voltage should be present. If not, check Light Green wire. If wire is okay, replace right outside mirror assembly.

Grand Am

1. Test circuit fuse by operating horn. If neither mirror operates, check for battery voltage at center console outside mirror switch by connecting a test light between Orange wire and ground. If test light glows, connect test light between Orange wire and Black wire. If test light does not glow, check Orange and Black wire circuits.
2. If left mirror does not operate, place mirror selector switch in left mirror position. Connect test light to Yellow and Light Green/Black terminals of outside mirror switch. Check that test light glows when mirror control switch is in up and down position.
3. Connect test light to Light Blue and White/Black terminals of outside mirror switch. Check that test light glows when mirror control switch is in left and right positions. If test light glows but mirror does not turn, check wiring and motor. If test light does not glow when switches are in position to energize its terminals, replace outside mirror switch.
4. If right mirror does not operate, place mirror selector switch in right mirror position. Connect test light to Yellow and Light Green terminals of outside mirror switch. Check that test light glows when mirror control switch is in up and down position.
5. Connect test light to Light Blue/Black and White terminals of outside mirror switch. Check that test light glows when mirror control switch is in left and right position. If test light glows but mirror does not turn, check wiring and motor. If test light does not glow when switches are in position to energize its terminals, replace outside mirror switch.

Toronado

1. Check circuit fuse by operating dome lights. Connect test light to ground and check for 12 volts at Orange wire. If test light comes on, connect test light between Orange and Black wire. If test light does not come on, check Orange and Black wire circuits.
2. If a mirror does not operate, place mirror selector switch in position to operate inoperative mirror. Connect test light between Yellow and Light Green terminals of outside mirror switch. Test light should come on when mirror control switch is in up and down positions.
3. Connect test light between Light Blue and White terminals of outside mirror switch. Test light should come on when mirror control switch is in left and right positions.
4. If test light comes on but mirror does not turn, check wiring and motor. If test light does not come on when switches are in position to energize its terminals, replace outside mirror switch.

Removal

Cover door to avoid damage to painted surface. Tape mirror, then break mirror glass. Remove broken glass and fiber pad from mirror frame. Wipe inside of mirror frame clean.

Installation

Remove paper backing from service mirror and center mirror in frame. Press mirror firmly to ensure adhesion of mirror to mirror frame.

Removal (Grand Am)

Grasp mirror case and pull case away from housing until it snaps free. Remove motor attaching screws, disconnect wiring harness and remove motor from housing.

Connect wiring harness to motor. Place motor in housing and install attaching screws. Pull out stabilizer studs from motor and install on mirror case. Align mirror case with stabilizer stud holes and pivot bar on motor. Install mirror case.

Removal (All Others)

Cover door to avoid damage to painted surface. Remove mirror by taping mirror and breaking mirror glass. Remove broken glass, mirror frame attaching screw and mirror frame. Remove motor attaching screws. Lift motor out of housing and disconnect wiring harness.

Connect wiring harness to motor and install motor to housing using screws. Position new mirror frame to motor and install attaching screw. Remove paper backing from service mirror and center mirror in frame. Press mirror firmly to ensure adhesion of mirror to mirror frame.

Scheme 1

Removal & Installation (Grand Am)

Remove inner belt sealing strip and trim panel. Remove escutcheon assembly screws and escutcheon. Remove mirror assembly screw, wiring harness, nuts, mirror and body filler. To install, reverse removal procedure.

Removal & Installation (All Others)

Remove door trim panel and disconnect wiring harness at connector. Peel back insulator pad and water deflector enough to gain access to wire harness. Detach harness from any retaining tabs in door. Remove attaching nuts from mirror case and remove mirror and harness from door. To install, reverse removal procedure.

Removal & Installation (Armrest Switch)

Remove switch plate mounting screws. Disconnect wiring harness and remove switch. To install, reverse removal procedure.

Removal & Installation (Instrument Panel Switch)

Remove instrument panel trim plate. Disconnect wiring harness and remove switch. To install, reverse removal procedure.

Removal & Installation (Center Console Switch)

Remove center console trim plate. Disconnect wiring harness and remove switch. To install, reverse removal procedure.

WIRING DIAGRAMS

For wiring diagrams, refer to appropriate chassis wiring diagram in WIRING DIAGRAMS section.