For 1990-2009 cars only
Diagnostic Starting Point - Instrument Panel, Gages and Console for GMC Truck Yukon - 4WD 2005
Begin the Instrument Panel (I/P) System diagnosis with Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check will provide the following information:
| • | The identification of the control modules which command the system |
| • | The ability of the control modules to communicate through the serial data circuit |
| • | The identification of any stored DTCs and their status |
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
