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Home >> GMC >> 2017 >> Canyon SL >> Repair and Diagnosis (Single Page) >> Body & Frame >> Towing Systems >> Trailer Brake Control System >> Description and Operation >> Trailer Brake Controls Description and Operation >> Chassis Control Module-Auxiliary

Chassis Control Module-Auxiliary

The K38A Chassis Control Module-Auxiliary is a serviceable GMLAN module. The chassis control module sends the low power commanded duty cycle signal to the trailer brake power control module. The trailer brake power control module amplifies the signal and provides an output that is required to drive the trailer brakes.