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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Diagnostic Information and Procedures >> Automatic Day-Night Mirrors Inoperative (With RPO DL3/DR4) >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Backup Lamp Supply Voltage 1 1 2 -
Automatic Day/Night Mirror Signal 2 2 1 -
Low Reference - 2 2 -
1. Rearview mirror remains dimmed in reverse
2. Rearview mirror does not dim
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