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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 256 (Mirror System) >> Diagnostic Information and Procedures >> Automatic Day-Night Mirrors Malfunction (With DR5) >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Ignition 1 1 - -
Backup Lamp Control U152D 00 1 1 -
Ground - 1 - -
1. Inside Mirror Automatic Dimming Inoperative