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
Transfer Case Control Wiring 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
Scan Tool Reference