Diagnostic Aids

Engine will not start when there is a total malfunction of class 2 serial data circuit while engine is not running.

Fig 1: Identifying Radio Harness Connector C1 Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Powertrain Control Module Harness Connectors Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 3: Identifying Instrument Panel Cluster Harness Connector Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 4: Identifying Electronic Brake Control Module Harness Connector Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 5: Identifying Sensing & Diagnostic Module Harness Connector Terminals

Courtesy of GENERAL MOTORS CORP.