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Home >> Chevrolet >> 2018 >> Silverado 1500 SSV, 4WD, Part Time T/Case Control, Gas >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Brake Controls System >> Diagnostic Information And Procedures >> Trailer Connection Not Recognized >> Circuit/System Description

Circuit/System Description

The K38A Chassis Control Module-Auxiliary receives inputs from the K133 Trailer Brake Power Control Module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes.