Reference Information

Schematic Reference 

Engine Controls Schematics (LS3) or Engine Controls Schematics (LS7) or Engine Controls Schematics (LS9)

Connector End View Reference 

Component Connector End Views

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 

Control Module References for scan tool information

Special Tools 

J 26792  HEI Spark Tester. See Special Tools .