GM > Engine Diagnostics > DTCs


Diagnostic Trouble Code (DTC)
This tab controls the setting of the MIL and SES lamps and the reporting of the various DTC codes (Pxxx). Note: It does not disable the actual tests. eg. disabling the MAF DTCs will not affect the behavior of the engine if the MAF fails. ie. it will still revert to backup mode, set maximum knock learn etc.


Diagnostic Trouble Code (DTC) Error Mode


Diagnostic Trouble Code (DTC) SES Enabled