C1112 BUICK - Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
C1112 Buick DescriptionThe chassis control module receives inputs from the trailer brake power control module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes. The trailer brake power control module detects a short to ground, open or a short to voltage on the trailer brake control signal circuit.
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