Operation CHARM
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GMC Truck
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1993
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C 3500 Truck 2WD V8-350 5.7L
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Repair and Diagnosis
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Body and Frame
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Locks
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Power Locks
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Power Door Lock Actuator
Power Door Lock Actuator
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Description and Operation
Regular Cab and Extended Cab
Crew Cab
Testing and Inspection
Initial Inspection and Diagnostic Overview
Component Tests and General Diagnostics
Both Switches Only Open One Door Lock
None of the Door Lock Motors Lock or Unlock
Power Door Locks Do Not Operate From Either Switch
Power Door Locks Only Work From One Lock Switch
Locations
Front
Side
Diagrams
Diagram Information and Instructions
Cell References
Schematic Symbols
Symbol Identification
Part 1 of 3
Part 2 of 3
Part 3 of 3
Wire Color Code Identification
Diagnostic Aids
Connector, Splicing and Terminal Repair
Pull-to-Seat Connectors
Push-to-Seat Connectors
Repairing Connectors
Terminal Repair
Weather Pack Connectors
Tech Tips
Basic Circuit Operation
Electricity
Series Circuit
Parallel Circuit
Series/Parrel Circuit
General Troubleshooting Procedures
Basic Troubleshooting Guide
Troubleshooting Tools
Troubleshooting Tests
Intermittents and Poor Connections
Checking Terminal Contact
Circuit Malfunctions
Open Circuit
Short Circuit
Grounded Circuit
Handling and Measuring Procedures
Typical Electrical Repair
Wire Repair Procedures
Circuit Protection Devices
Typical Electrical Repair
Splicing Copper Wire Using Crimp and Seal Splice Sleeves
Splicing Copper Wire Using Splice Clips
Splicing Twisted/Shielded Cable
Electrical Diagrams
Regular Cab and Extended Cab
Crew Cab
Description and Operation
Testing and Inspection
Locations
DiagramsDescription and OperationTesting and InspectionLocationsDiagrams