Diagnostic Starting Point - SIR. Chevrolet Cruze (SGM) 2009

For 1990-2009 cars

Begin the system diagnosis with the Diagnostic System Check - Vehicle. The Diagnostic System Check will provide the following information:

• | The identification of the control module which commands the system

• | The ability of the control module to communicate through the serial data circuit

• | The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.