Reference Information
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Component Connector End Views - index , Inline Harness Connector End Views - Index and Master Electrical Component List
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Special Tools
EL-38522 Variable Signal Generator