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The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as Reference Information Schematic Reference Inside Rearview Mirror Schematics Outside 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 Wiper/Washer Schematics Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References For Scan Tool Information.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Circuit/System Verification 1. 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 If the mirror face does not dim, test or replace the inside rearview mirror. 2. Headlamps ON, park brake applied, 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 If the mirror does not transition from dim to bright, refer to Reverse Input Malfunction 3. 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 left outside rearview If the left outside rearview mirror face does not dim, refer to Outside Rearview Mirror 4. Remove the towel from the inside rearview mirror and remove the flashlight. Verify the inside rearview mirror face returns to its normal bright state. If the mirror face does not return to its normal state, test or replace the inside rearview Circuit/System Testing Reverse Input Malfunction 1. Ignition OFF, disconnect the harness connector at the inside rearview mirror. 2. Ignition ON, park brake applied, vehicle in REVERSE, test for B+ between the supply voltage circuit terminal 9 and ground. If less than the specified value, test the supply voltage circuit for a short to ground or 3. If all circuits test normal, test or replace the inside rearview mirror. Outside Rearview Mirror Dimming Malfunction 1. Ignition OFF, disconnect the harness connector at the inside rearview mirror. 2. Ignition ON, verify a test lamp does not illuminate between the following circuits and ground:
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Signal circuit terminal 5 Low reference circuit terminal 16 If the test lamp illuminates, test the applicable circuit for a short to voltage. 3. Ignition OFF, test for infinite resistance between the following circuits and ground: Signal circuit terminal 5 Low reference circuit terminal 16 If less than the specified range, test the applicable circuit for a short to ground. 4. Test for less than 100 ohms of resistance between the signal circuit terminal 5 and the low reference circuit terminal 16. If greater than the specified range, test both circuits for an open/high resistance. If the 5. If all circuits test normal, replace the inside rearview mirror. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Inside Rearview Mirror Replacement Outside Rearview Mirror Glass Replacement AUTOMATIC DAY-NIGHT MIRRORS INOPERATIVE (WITHOUT RPO DL3/DR4) Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. Diagnostic Fault Information Circuit/System Description Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance Backup Lamp Supply Voltage 1 1 2 - 1. Rearview mirror remains dimmed in reverse
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as Reference Information Schematic Reference Inside Rearview Mirror Schematics Outside 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 Wiper/Washer Schematics Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References For Scan Tool Information. Circuit/System Verification
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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