Operation CHARM
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GMC Truck
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2013
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Sierra 2500 2WD V8-6.0L
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Repair and Diagnosis
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Brakes and Traction Control
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Relays and Modules - Brakes and Traction Control
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Trailer Brake Control Module
Trailer Brake Control Module
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Testing and Inspection
Locations
Trailer Brake Control Module
Fuel Pump/Trailer Brake Control Module (JL1)
Trailer Brake Control Module (JL1)
Service and Repair
Trailer Brake Control Switch Replacement
Trailer Brake Control Module Replacement (2500, 3500 Pickup)
Diagrams
Trailer Brake Control Module (JL1 except 31 Series)
Trailer Brake Control Module (JL1 with 31 Series)
