Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .
Reference Information
Schematic Reference
Inside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views
Description And Operation
Automatic Day-Night Mirror Description and Operation
Electrical Information Reference
- «Circuit Testing»(ref-299596-S40031980912008092400000)
- «Connector Repairs»(ref-299596-S11637586662008092400000)
- «Testing for Intermittent Conditions and Poor Connections»(ref-299596-S35075552982008092400000)
- «Wiring Repairs»(ref-299596-S38795053442008092400000)
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Verification
- Ignition ON, headlamps ON, vehicle in PARK, cover the front light sensor with a towel or other suitable item. Shine a flashlight at the rear light sensor while observing the inside rearview mirror face. The inside rearview mirror face should dim.
- Park brake applied, place the transmission in REVERSE. The inside rearview mirror face should transition from dim to bright.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- «Inside Rearview Mirror Replacement»(ref-299599-S37574896382008092400000)
- «Control Module References»(ref-299597-S40606836452008092400000) for BCM replacement, setup, and programming
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Outside Mirror Description and Operation
Electrical Information Reference
- «Circuit Testing»(ref-299596-S40031980912008092400000)
- «Connector Repairs»(ref-299596-S11637586662008092400000)
- «Testing for Intermittent Conditions and Poor Connections»(ref-299596-S35075552982008092400000)
- «Wiring Repairs»(ref-299596-S38795053442008092400000)
Scan Tool Reference
Control Module References for scan tool information
- Ignition ON, with the mirror selector switch in the DRIVER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The driver mirror should move in the commanded direction.
- With the mirror selector switch in the PASSENGER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The passenger mirror should move in the commanded direction.
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- «Power Mirror Switch Replacement»(ref-299599-S12975779592008092400000)
- «Outside Rearview Mirror Motor Replacement»(ref-299599-S09763228132008092400000)
- «Outside Rearview Mirror Glass Replacement»(ref-299599-S05389565112008092400000)
Scheme 4
| Callout | Component Name |
|---|---|
| Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . | |
| 1 | Cup, Front Side Door Armrest Pull Refer to Armrest Pull Cup Replacement . |
| 2 | Switch, Outside Rearview Mirror Tip: Disconnect the electrical connector and remove from the armrest pull cup. |
Scheme 5
| Callout | Component Name |
|---|---|
| NOTE: Refer to Fastener Notice . Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure Remove the front door interior trim panel. Refer to Front Side Door Trim Panel Replacement . | |
| 1 | Nut, Mirror Outside Rearview (Qty: 3) Tighten: 10 N.m (89 lb in) |
| 2 | Mirror Assembly, Outside Rearview Tip: Disconnect the electrical connector. |
| NOTE |
|---|
| Refer to Fastener Notice . |
Scheme 6
| Callout | Component Name |
|---|---|
| NOTE: Refer to Fastener Notice . Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure: Remove the interior trim panel. Refer to Front Side Door Trim Panel Replacement . | |
| 1 | Mirror Glass, Outside Rearview CAUTION: Refer to Glass and Sheet Metal Handling Caution . Tip: Apply masking tape to the top of the outside of the mirror housing to prevent damage. Push the mirror face inward at the bottom until full travel is reached. Insert a J 38778 Door Trim Pad Clip Remover or equivalent behind the glass and the first rib support and pry outward until the mirror face is released. When installing the mirror glass align the mirror face to the backing plate and apply pressure, using a rubber sanding block or equivalent, until an audible click is heard. |
| 2 | Screw, Front Door Mirror Motor (Qty: 3) Tighten: 3 N.m (25 lb in) |
| 3 | Motor, Front Door Outside Rearview Mirror Tip: Disconnect the electrical connector. |
| NOTE |
|---|
| Refer to Fastener Notice . |
| CAUTION |
|---|
| Refer to Glass and Sheet Metal Handling Caution . |
Scheme 7
| Callout | Component Name |
|---|---|
| Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . | |
| 1 | Mirror Glass, Outside Rearview CAUTION: Refer to Glass and Sheet Metal Handling Caution . Tip: Apply masking tape to the top of the outside of the mirror housing to prevent damage. Push the mirror face inward at the bottom until full travel is reached. Insert a J 38778 Door Trim Pad Clip Remover or equivalent behind the glass and the first rib support and pry outward until the mirror face is released. When installing the mirror glass align the mirror face to the backing plate and apply pressure, using a rubber sanding block or equivalent, until an audible click is heard. |
| CAUTION |
|---|
| Refer to Glass and Sheet Metal Handling Caution . |
Power Mirror System Components
The power mirror system consists of the following components
- Mirror direction switch - Controls the left, right, up and down movements of the mirrors
- Mirror select switch - Allows the operator to select the mirror to be moved
- Left outside mirror - Contains both the horizontal and vertical mirror motors
- Right outside mirror - Contains both the horizontal and vertical mirror motors
- BCM ELECT 7.5A fuse - Located in the body control module (BCM) fuse panel and supplies power for the power mirror system
Each of the outside power mirrors contains 2 motors. The up-down motor operates the vertical directions and the left-right motor operates the horizontal directions. Each of the power mirror motors are internally circuit breaker protected.
Power Mirror System Controls
The outside mirror switch incorporates a mirror select switch and a 4 position mirror direction switch.
The mirror select switch allows the driver to select the mirror to be moved by pressing the switch to L position enabling the left outside mirror or pressing the switch to R position enabling the right outside mirror.
The mirror direction switch is a 4 position switch that allows the operator to move the selected mirror up, down, left or right.
Inside Rearview Mirror with the Automatic Day-Night Feature System Components
The inside rearview mirror with the automatic day-night feature system consist of the inside rearview mirror.
Power and Ground of the Inside Rearview Mirror
- With the ignition ON, ignition voltage is supplied to the mirror from the HVAC/IP IGN 10-amp fuse in the body control module (BCM).
- Ground for the mirror is provided by G401.
Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature and OnStar®
The inside rearview mirror has 4 switches that perform the following functions
- The on/off switch located at the left side of the mirror turns the automatic day-night feature on/off.
- The 3 switches on the right side of the mirror are for OnStar® operation. For more information, refer to «OnStar Description and Operation»(ref-299576-S18015915722008092400000) .