Operation CHARM
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GMC Truck
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1993
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C 2500 Truck 2WD V8-379 6.2L DSL VIN J FI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Engine Control Module
Engine Control Module
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Description and Operation
Heavy Duty
Light Duty
Testing and Inspection
Locations
Engine Control Module (ECM)
Powertrain Control Module (PCM)
Service and Repair
Heavy Duty
Light Duty
Vehicle Control Module (VCM) Replacement
Diagrams
Harness Connector
With Heavy Duty
1 of 4
2 of 4
3 of 4
With Light Duty
Manual Transmission
4L60E Automatic Transmission
1 of 2
2 of 2
Technical Service Bulletins
