IDENTIFICATION
| Series (1) | Model |
|---|---|
| "S" | 2WD Blazer, Jimmy, Pickup & Sonoma |
| "T" | 4WD Blazer, Bravada, Jimmy, Pickup & Sonoma |
| (1) Vehicle series is fifth character of VIN. | |
| (1) | Vehicle series is fifth character of VIN. |
MODEL IDENTIFICATION
DESCRIPTION & OPERATION
Power mirror assemblies contain 2 motors each. One motor positions the mirror up and down, and the other positions mirror right and left. Reversing polarity of motors will move power mirrors in opposite directions. The power mirror switch is located on the left door trim panel.
TROUBLE SHOOTING
Before proceeding with specific testing, check the following for proper operation
- Check courtesy light and CTSY (15-amp or 20-amp) fuse for proper operation.
- Check power seat system operation. Ensure power accessory circuit breaker is okay.
- Check and ensure grounds are clean and tight.
- Manually operate door locks. Ensure lock rods and lock mechanism function are normal.
- Examine sliding door contact switch for damage.
- If power accessory circuit breaker opens when power door locks are operated, check for possible short to ground.
- Check for broken or partially broken wire inside insulation, which could cause system malfunction, but prove good in a continuity/voltage check with system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring voltage drop with system operational (under load).
- Check for proper installation of aftermarket electronic equipment.
BOTH POWER MIRRORS DO NOT OPERATE
- Using test light, backprobe between power mirror switch connector terminal "H" (Orange wire) and ground. If test light glows, go to next step. If test light does not glow, repair open in Orange wire between power mirror switch and fuse block.
- Backprobe between power mirror switch terminals "H" (Orange wire) and "A" (Black wire). If test light glows, check for poor connection at power mirror switch connector. If connection is okay, replace switch. If test light does not glow, repair poor connection or open in Black wire to power mirror switch.
LEFT POWER MIRROR DOES NOT OPERATE IN LEFT/RIGHT POSITIONS
- Using test light, backprobe between power mirror switch terminals "D" (Light Blue wire) and "B" (White wire). Move power mirror switch to left and right positions. If test light glows in both positions, go to next step. If test light does not glow in one or both positions, replace power mirror switch.
- Backprobe between power mirror connector terminals "A" (Light Blue wire) and "D" (White wire). Move power mirror switch to left and right positions. If test light glows, replace power mirror. If test light does not glow, repair open in Light Blue or White wire between power mirror switch connector and power mirror connector.
LEFT POWER MIRROR DOES NOT OPERATE IN UP/DOWN POSITIONS
- Using test light, backprobe between power mirror switch terminals "D" (Light Blue wire) and "E" (Yellow wire). Move power mirror switch to up and down positions. If test light glows in both positions, go to next step. If test light does not glow in one or both positions, replace power mirror switch.
- Backprobe between power mirror connector terminals "C" (Light Green wire) and "E" (Yellow wire). Move power mirror switch to up and down positions. If test light glows, replace power mirror. If test light does not glow, repair open in Light Green or Yellow wire between power mirror switch connector and power mirror connector.
RIGHT POWER MIRROR DOES NOT OPERATE IN LEFT/RIGHT POSITIONS
- Using test light, backprobe between power mirror switch terminals "D" (Light Blue wire) and "C" (White/Black wire). Move power mirror switch to left and right positions. If test light glows in both positions, go to next step. If test light does not glow in one or both positions, replace power mirror switch.
- Backprobe between power mirror connector terminals "A" (Light Blue/Black wire) and "D" (White/Black wire). Move power mirror switch to left and right positions. If test light glows, replace power mirror. If test light does not glow, repair open in Light Blue/Black or White/Black wire between power mirror switch connector and power mirror connector.
RIGHT POWER MIRROR DOES NOT OPERATE IN UP/DOWN POSITIONS
- Using test light, backprobe between power mirror switch terminals "D" (Light Blue wire) and "F" (Yellow/Black wire). Move power mirror switch to up and down positions. If test light glows in both positions, go to next step. If test light does not glow in one or both positions, replace power mirror switch.
- Backprobe between power mirror connector terminals "C" (Light Green/Black wire) and "B" (Yellow/Black wire). Move power mirror switch to up and down positions. If test light glows, replace power mirror. If test light does not glow, repair open in Light Green/Black or Yellow/Black wire between power mirror switch connector and power mirror connector.
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. |
- Disconnect negative battery cable. Remove door handle bezel screw. Prying at rear of bezel with lever in locked position, remove door handle bezel from trim panel.
- Insert Door Handle Remover (J 9886-01) between handle and bearing plate. Align tool parallel with door handle, and push to disengage clip. Pull handle from door. Remove bearing plate.
- Using flat-blade tool, carefully remove power accessory switch panel. Using Trim Panel Remover (J 38778), remove trim panel. Remove access hole plugs. Remove power mirror mounting nuts. Disconnect electrical connector from power mirror. Remove power mirror assembly.
- To install, reverse removal procedure. Tighten power mirror mounting screws to 53 INCH lbs. (6 N.m). Tighten handle bezel screw to 44 INCH lbs. (5 N.m).
See also:
• COMPUTER RELEARN PROCEDURES