GMC TSB #N222383020
2022 GMC Sierra 1500
Affected Component: POWER TRAIN
- Summary
- Service Update: Certain vehicles may have an Engine Control Module that does not properly respond to certain service tool requests for the datafile CALID (part number) and CVN (checksum). This condition may cause a vehicle to fail an emissions Inspection/Maintenance (I/M) test. Dealers are to reprogram the Engine Control Module.