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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Lighting System - DTC B3891 To DTC C0297 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B3891: Trailer Fog Lamps Circuit >> 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 B3891 02

Trailer Fog Lamps Circuit Short to Ground

DTC B3891 04

Trailer Fog Lamps Circuit Open

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