DESCRIPTION
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 and Corvette models also have a power mirror heating system which operates in conjunction with rear window defogger. When the defogger is turned on, the 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.
OPERATION
Each power mirror assembly has 2 reversible motors. One motor moves the mirror up or down, and the other moves the mirror left or right. The voltage applied to motor terminals determines the direction mirror motor turns. When the mirror reaches its mechanical limit of travel, a self resetting circuit breaker opens the mirror control circuit to protect motor from overload.
SWITCH TEST
Calais, Grand Am & Somerset
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 the 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 Lt.
Green/Black terminals of outside mirror switch. Check the test light
glows when mirror control switch is in up and down position.
3) Connect test light to Lt. 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
install a new outside mirror switch.
4) If right mirror does not operate, place mirror selector
switch in right mirror position. Connect test light to Yellow and Lt.
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 Lt. Blue/Black and White terminals
of outside mirror switch. Check that the 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, install
a new outside mirror switch.
Camaro & Firebird
1) Operate right side mirror and check voltage at right
side mirror switch. With switch in up position Orange and Yellow
wires should have 12 volts and all other wires should have zero
volts. With switch in down position Orange and Lt. Green/Black
wires should have 12 volts and all other wires should have zero
volts.
2) With switch in left position Orange and White/Black
wires should have 12 volts and all other wires should have zero
volts. With switch in right position Orange and Lt. Blue wires
should have 12 volts, all other wires should have zero volts.
3) Operate left side mirror and check voltage at left
side mirror switch. With switch in up position Orange and Yellow
wires should have 12 volts and all other wires should have zero
volts. With switch in down position Orange and Lt. Green wires
should have 12 volts and all other wires should have zero volts.
4) With switch in left position Orange and White wires
should have 12 volts and all other wires should have zero volts.
With switch in right position Orange and Lt. Blue wires should
have 12 volts and all other wires should have zero volts.
Corvette
1) Remove connector from mirror selector switch. Turn
ignition on, operate mirror adjuster control and check voltage
at mirror selector switch connector. With control in up position
Yellow, Lt. Green, White and Lt. Blue wires should have battery
voltage and Dark Blue wire should have zero volts.
2) With control in down position Dark Blue wire should
have battery voltage and all other wires should have zero volts.
With control in left position Dark Green wire should have battery
voltage and all other wires should have zero volts.
3) With control in right position Yellow, Lt. Green
White and Lt. Blue wires should have battery voltage. Dark Green
wire should have zero volts. If voltages are correct, replace the
mirror selector switch.
4) Check voltage at the mirror adjuster control with
connector (C314) attached. With control in up position Pink/Black
and Black/White wires should have battery voltage and Dark Blue
and Black wires should have zero volts.
5) With control in down position Pink/Black and Dark Blue
wires should have battery voltage and Black/White and Black wires
should have zero volts. With control in left position Pink/Black
and Dark Brown wires should have battery voltage and Black wire
should have zero volts.
6) With the control in right position Pink/Black and
Black/White wires should have battery voltage and Dark Brown and
Black wires should have zero volts. If voltages are incorrect
replace mirror adjuster control.
7) If voltages are correct, select left or right position
at mirror selector switch. Check voltage at connector (C2) of selected
mirror. With the control in up position Black/White wire should have
battery voltage and Yellow wire should have zero volts.
8) With control in down position Yellow wire should have
battery voltage and Black/White wire should have zero volts. With
control in left position, White wire should have battery voltage
and Black/White wire should have zero volts.
9) With the control in right position Black/White wire
should have battery voltage and White wire should have zero volts.
If voltages are incorrect, replace mirror. If voltages are correct
check wiring back to mirror adjuster control and mirror selector
switch.
Delta 88 & Toronado
1) Check circuit fuse by operating dome lights. Connect
a test light to ground and check for 12 volts at Orange wire. If
test light glows, connect the test light between Orange wire and
Black wire. If test light does not glow, 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 Lt. Green terminals of outside mirror
switch. Check that test light glows when mirror control switch
is in up and down positions.
3) Connect test light between Dark Blue (Lt. Blue on
Toronado) and White terminals of outside mirror switch. Check
that test light glows when mirror control switch is in left and
right positions.
4) 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, install new outside mirror
switch.
Fiero & 6000
1) Remove outside mirror switch from console, leave
switch connected to wiring harness and check for 12 volts at
Orange wire. Operate left side mirror and check voltage. With
switch in up position Orange and Yellow wires should have 12
volts and all other wires should have zero volts.
2) With the switch in the down position Orange and Lt.
Green/Black wires should have 12 volts and all other wires should
have 0 volts. With switch in left position Orange and White/Black
wires should have 12 volts and all other wires should have zero
volts. With the switch in right position Orange and Lt. Blue (Lt.
Blue/Black on 6000) wires should have 12 volts and all other wires
should have zero volts.
3) Operate right side mirror and check voltage. With switch
in up position Orange and Yellow wires should have 12 volts and all
other wires should have zero volts. With the switch in down position
Orange and Lt. Green wires should have 12 volts and all other wires
should have zero volts.
4) With the switch in left position Orange and White wires
should have 12 volts and all other wires should have zero volts. With
switch in right position Orange and Lt. Blue (Lt. Blue/Black on 6000
model) wires should have 12 volts. All other wires should have zero
volts.
Ninety Eight
1) If neither mirror moves in any direction, check fuse and
wiring between fuse block and outside mirror switch. If problem is
found, repair as necessary. If fuse and wiring are okay, check the
outside mirror switch ground (G201) and wiring between ground and
(C500) connector.
2) If a problem is found, repair as necessary. If ground
and wiring are okay, check continuity between terminals A and B of
outside mirror switch. If there is no continuity, replace switch.
3) If one mirror does not move in any direction, check
wiring between (C500) connector and inoperative mirror. Check the
continuity of outside mirror switch between terminals A and E, and
between terminals F and C for left side mirror. Check continuity of
outside mirror switch between terminals A and D, and between
terminals G and H for right side mirror.
Riviera
1) Remove mirror selector switch from driver's armrest and
leave switch connected to wiring harness. Connect the test light to
ground and check for 12 volts at Orange wire. 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) Operate right side mirror and check for 12 volts at
Orange and Yellow/Black wires. All other wires should have zero
volts. Operate left side mirror and check for 12 volts at Orange
and Yellow wires. All other wires should have zero volts.
Sunbird
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 the 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 Lt.
Blue terminals of outside mirror switch. Check that test light glows
when mirror control switch is in up and down positions.
3) Connect test light to White and Lt. Blue terminals of
outside mirror switch. Check that the 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 light when switches are in position to energize its terminals
install a new outside mirror switch.
4) If right mirror does not operate, place mirror selector
switch in right mirror position. Connect test light to Yellow/Black
and Lt. Blue/Black terminals of outside mirror switch. Check that
test light glows when mirror control switch is in up and down
positions.
5) Connect test light to White/Black and Lt. Blue/Black
terminals of outside mirror switch. Check that the 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, install a new outside mirror switch.
All Other Models
1) Remove mirror selector switch from armrest or instrument
panel and leave switch connected to wiring harness. Connect a test
light to ground and check for 12 volts at Orange wire. If test light
glows, connect test light between Orange wire and Black wire. If test
light does not light, check Orange and Black wire circuits.
2) Operate right side mirror and check voltage at right
side mirror switch. With switch in up position, Orange and Yellow
wires should have 12 volts. All other wires should have zero volts.
With switch in down position, Orange and Lt. Green (Lt. Green/Black
on Skyhawk) wires should have 12 volts. All other wires should have
zero volts.
3) With switch in left position, Orange and Lt. Blue (Lt.
Blue/Black on Skyhawk) wires should have 12 volts. And all other
wires should have zero volts. With switch in right position Orange
and White (White/Black on Skyhawk) wires should have 12 volts. All
other wires should have zero volts.
4) Operate left side mirror and check voltage at left side
mirror switch. With switch in up position Orange and Yellow wires
should have 12 volts. All other wires should have zero volts. With
switch in down position Orange and Lt. Green wires should have 12
volts. All other wires should have zero volts.
5) With switch in left position Orange and Lt. Blue wires
should have 12 volts. All other wires should have zero volts. With
switch in right position Orange and White wires should have 12 volts.
All other wires should have zero volts.
MIRROR GLASS
Removal & Installation (Fiero)
Grasp inner and outer edges of glass. Pull glass rearward to disengage it from pivot. To install, align worm gear shafts on glass with drive gears. Press in on glass until it snaps into pivot.
Scheme 1
Removal (All Except Fiero)
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.
MIRROR MOTOR
Removal (Calais, Grand Am & Somerset)
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.
Installation
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 & Installation (Fiero)
Disconnect negative battery cable and remove mirror. Remove door trim panel, weatherstrip, mirror assembly nuts and mirror assembly. Disconnect the wiring harness, remove motor attaching screws and remove motor. To install, reverse removal procedure.
Removal (All Except Fiero)
Remove mirror by tapping mirror and braking mirror glass. Remove broken glass, mirror frame attaching screw and mirror frame. Remove the motor attaching screws. Lift motor out of housing and disconnect wiring harness.
Installation
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 2
MIRROR ASSEMBLY
Removal & Installation (Calais, Grand Am & Somerset)
Remove inner belt sealing strip and trim panel. Remove estucheon assembly screws and estucheon. Remove mirror assembly screw, wiring harness, nuts, mirror and body filler. To install, reverse removal procedure.
Removal & Installation (All Other Models)
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.
SWITCHES
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.