Using On-Board Diagnostics
If any warning messages exist, depress RESET button. Depress and hold OPTIONS button and press FUEL button 4 times within 5 seconds of depressing OPTIONS button. Module number and module name will appear on Driver's Information Center (DIC) display. Module number for Left Door Control Module (LDCM) is A0, module number for Right Door Control Module (RCDM) is A1. After module is displayed, individual DTCs will be displayed.
To begin manual control of DTC viewing, depress FUEL, TRIP, GAUGES, OPTIONS or RESET button. Depress TRIP button to view previous module. Depress OPTIONS button to view next module. Depress FUEL button to view previous DTC in selected module. Depress GAUGES button to view next DTC in selected module. After retrieving and recording current and history DTCs, proceed to appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE INDEX table. Depress E/M button to exit self-diagnostics.