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GMC Truck
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2003
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K 2500 Truck 4WD V8-6.0L VIN U
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Repair and Diagnosis
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Powertrain Management
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Body Control Module
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Description and Operation
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Power Mode Master Module (PMM)
Power Mode Master Module (PMM)
On vehicles that have several control modules connected by serial data circuits, one module is the Power Mode Master (PMM). On this vehicle the PMM is the Body Control Module (BCM).