DESCRIPTION & OPERATION
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Voltage is applied at all times to the power outside rearview mirror switch, through the ACC-BATT circuit breaker and an In-Line Auto Fuse. The mirror assemblies contain 2 motors. One motor positions the mirror up and down, the other motor positions the mirror to the left or right. By reversing the polarity of the motors, the motors will move the mirrors either up/down or left/right.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Convenience Center | Under Left Side Of Instrument Panel. (Scheme 1) |
| Fuse Block | Lower Left Side Of Instrument Panel. (Scheme 2) |
| Power Outside Rearview Mirrors | On Outside Of Front Doors. |
| Power Outside Rearview Mirror Switch | On Left Front Door Trim Panel. (Scheme 3) |
| C241 | At Convenience Center. (Scheme 4) |
| C246 | Taped To Cross Body, Near Convenience Center At In-Line Fuse. (Scheme 5) |
| C257 | At Convenience Center. (Scheme 4) |
| C327 | Left Body Hinge Pillar. (Scheme 4) |
| C329 | Right Body Hinge Pillar. (Scheme 4) |
| G202 | At ALDL Connector. (Scheme 2) |
| S207 | Under Left Side Of Instrument Panel. (Scheme 2) |
| S272 | Power Window & Door Locks Harness, Near Convenience Center Leads. (Scheme 4) |
| S502 | Power Window/Lock Harness Left Front Door, Near Power Window Motor Lead. (Scheme 3) |
| S503 | Power Window/Lock Harness, Near Left Front Door. (Scheme 3) |
COMPONENT LOCATIONS
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
PRELIMINARY INSPECTION
Check to see that the ACC-BATT circuit breaker and In-Line (C296) Fuses are not blown. If fuses are blown, locate and repair the source of the overload, then replace the fuse.
SYSTEM TESTS
SYMPTOM INDEX
TEST A: LEFT MIRROR WILL NOT ADJUST UP & DOWN
If the left mirror will not adjust up and down (Scheme 6)
Scheme 6
TEST B: LEFT MIRROR WILL NOT ADJUST LEFT & RIGHT
If the left mirror will not adjust left and right (Scheme 7)
Scheme 7
TEST C: RIGHT MIRROR WILL NOT ADJUST UP & DOWN
If the right mirror will not adjust up and down (Scheme 8)
Scheme 8
TEST D: RIGHT MIRROR WILL NOT ADJUST LEFT & RIGHT
If the right mirror will not adjust left and right (Scheme 9)
Scheme 9
TEST E: NEITHER MIRROR IS OPERATIONAL
If neither mirror is operational (Scheme 10)
Scheme 10
REMOVAL & INSTALLATION
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Removal
- Remove trim panel. See «TRIM PANEL»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power).
- Remove nuts holding mirror to door. (Scheme 11)
- Disconnect mirror wiring connector and remove mirror from door.
Scheme 11
Installation
- Connect mirror wiring.
- Install nuts holding mirror to door.
- Install trim panel. See «TRIM PANEL»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power) .
- Remove trim panel pull strap (if present). Remove the plug on each side of the strap and the screws underneath.
- Remove door handle bezel.
- Remove armrest screws (58). (Scheme 12)
- Remove armrest pad (59).
- Remove window handle, if present, with J 9886-01. See «WINDOW REGULATOR HANDLE»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power) and «SPECIAL TOOLS»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power)
- Use Trim Pad Remover (J 24595-C) to remove nylon fasteners (70) from inner door panel. See «SPECIAL TOOLS»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power).
- Remove door trim pad (57).
- Feed bezel with switches through cut-out in trim panel.
Scheme 12
- Install nylon fasteners (70) to the door trim panel if any remained in the door. Replace any broken nylon fasteners. (Scheme 12)
- Feed bezel with switches through cut-out in trim panel.
- Install door trim panel.
- Put trim pad (57) in place on door and push the nylon fasteners (70) into the holes on the door.
- Install window handle, if used. See «WINDOW REGULATOR HANDLE»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power).
- Install armrest pad (59).
- Install armrest screws (58).
- Install door handle bezel.
- Install pull strap, if present.
- Insert Door Handle Clip Remover (J 9886-01) between the handle (25) and the bearing plate. (Scheme 13) See «SPECIAL TOOLS»(/chevrolet/cab-chassis-c3500/1989-2000/remont/mirrors/#mirrors-power).
- Align the tool parallel with the door handle and push to disengage the spring clip (24).
- Pull the handle (25) from the door.
- Remove the bearing plate.
Scheme 13
- Install bearing plate.
- Place the window in the raised position.
- Put the spring clip (24) onto the handle (25). (Scheme 13)
- Insert the handle onto the door so that the handle is pointing toward the front of the door.
- Push on the handle (25) until the spring clip (24) engages the window regulator shaft.
TORQUE SPECIFICATIONS
| Application | INCH Lbs. (N.m) |
|---|---|
| Mirror Mounting Bolts | 89 (10) |
TORQUE SPECIFICATIONS
