Operation CHARM
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GMC Truck
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1992
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Suburban 3/4 Ton 4WD V8-454 7.4L
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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
Testing and Inspection
Locations
Control Module
Electronic Control Module (ECM)
Powertrain Control Module (PCM)
Service and Repair
Control Module Replacement
Engine Control Module (ECM) Replacement
Diagrams
Harness Connector
With 4L60-E Transmission
With 4L80E Automatic Transmission
Technical Service Bulletins
