Operation CHARM
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GMC Truck
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1994
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K 2500 Truck 4WD V8-454 7.4L
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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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Engine Control Module
Engine Control Module
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Description and Operation
Testing and Inspection
Locations
Service and Repair
Control Module Replacement
Vehicle Control Module (VCM) Replacement
Diagrams
C215 PCM
C218 PCM
Pinout and Terminal ID with PCM
With Manual Transmission
With 4L80-E Automatic Transmission
with PCM
C215 PCM
C218 PCM
Technical Service Bulletins
