Reference Information

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Schematic Reference

Engine Controls Schematics (LZ1)

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Electronic Ignition System Description

Electrical Information Reference

Testing for Intermittent Conditions and Poor Connections
Circuit Testing
Wiring Repairs
Connector Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

J-35616 GM Approved Terminal Test Kit

For equivalent regional tools, refer to Special Tools .