Operation CHARM
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GMC Truck
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1993
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K 1500 Truck 4WD V8-350 5.7L
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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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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
Initial Inspection and Diagnostic Overview
Component Tests and General Diagnostics
Locations
Control Module
Engine Control Module (ECM)
Powertrain Control Module (PCM)
Service and Repair
Control Module Replacement
Vehicle Control Module (VCM) Replacement
Diagrams
With Manual Transmission
With 4L60-E Transmission
Harness Connector
Pinout Description
With 4L80E Automatic Transmission
Without 4L60E/4L80E Automatic Transmission
Technical Service Bulletins
