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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 336 (Seat Heating System And Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B191A or B191B: Heated Seat Module >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

The control module detects an internal fault.

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