GM Service Manual Online
For 1990-2009 cars only

System

DTCs Required to Set System Status to YES

Component Monitoring

DTC P0236

DTC P0741 in Automatic Transmission - Allison

DTC P0742 in Automatic Transmission - Allison

EGR

DTC P0101

DTC P0401

DTC P0404

DTC P1191

Misfire Monitoring

DTC P0300

DTC P0301-P0308