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Home >> GMC >> 2021 >> Terrain SLT, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B3125, B3130, or B3135 >> Diagnostic Aids

Diagnostic Aids

A short to ground or a short to voltage anywhere on circuits 195, 294, or 295 will cause the power door lock system to be disabled by the body control module. It may be necessary to disconnect all the door latches, the X6 harness connector at the body control module and inspect the appropriate inline harness connectors to determine the source of the fault.