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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 266 (Seat Heating System And Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B191A: Front Heated Seat Module (Without W2E) >> Circuit/System Description

Circuit/System Description

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.

An internal fault is detected inside the control module. No external circuits are involved

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