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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 271 (Lighting System - DTC B0655 To DTC B3890) >> Diagnostic Information and Procedures >> DTC B3890: Trailer Backup Lamps >> DTC Descriptors

DTC Descriptors

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.
DTC B3890 02

Trailer Backup Lamps Circuit Short to Ground

DTC B3890 04

Trailer Backup Lamps Circuit Open

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