For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2005 🢒 GTO 🢒 Body 🢒 Lighting Systems 🢒 Diagnostic Starting Point - Lighting Systems

Diagnostic Starting Point - Lighting Systems for Pontiac GTO 2005

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

•	The identification of the control module(s) which command 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 the Diagnostic System Check-Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.