For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2004 🢒 Colorado Pickup - 4WD 🢒 Restraints 🢒 SIR 🢒 Diagnostic Starting Point - SIR

Diagnostic Starting Point - SIR for Chevrolet Colorado Pickup - 4WD 2004

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

•	The identification of the control module(s) which commands the system.

•	The ability of the control module(s) 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 - SIR will identify the correct procedure for diagnosing the system and where the procedure is located.