GMC TSB #PIP5373A
2016 GMC Savana
Affected Component: ELECTRICAL SYSTEM
- Summary
- THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES THE TECHNICIAN WITH STEPS ON HOW TO PROGRAM AN ENGINE CONTROL MODULE WHEN GETTING A SERVICE PROGRAMMING SYSTEM ERROR CODE E4491 OR E4423. IN SOME CASES TECHLINE CUSTOMER SUPPORT CENTER MAY NEED TO BE CONTACTED TO RESOLVE THE ISSUE.