Displaying ECM Trouble Codes

(Diagnostic Test 4.1)

Driver Information Center Buttons:

To display ECM Fault Codes, first select ECM as the appropriate module by pressing "TRIP RESET" until "4.0" is displayed in the Trip Monitor area of the cluster. Then select the Display Codes mode by pressing the "TRIP/ODO" button until "4.1" appears. Then, press the "ENG/MET" button to display the first code. All ECM codes, whether current or not, will show as history codes. Continue pressing the "ENG/MET" button to display additional ECM codes, until the End-Of-Information indicator ("---") is displayed in the speedometer. If it is necessary to go backward in the list, use the "INST/AVER" button. The top of the code list will be indicated by the "---" display in the speedometer.

The ECM fault code lists for both the L98 and LT5 engines are shown below.