Our friends at Spork and GMPartsCenter.net have come up with a handy chart for common engine error codes and parts replacement intervals. This chart is a handy rule-of-thumb guide for the home mechanic or for those unsure of what their car’s maintenance schedule might be. The guide is, of course, only a general reference with your vehicle’s owner’s manual trumping anything shown here. Still, it’s useful as a general “what’s coming” guide.
You can download it for free at https://www.gmpartscenter.net/blog/free-diy-reference-guide