Recently had a CEL pop up on truck (2021 GMC 3500HD Denali Duramax) with only ~900mi. A trip to the stealer identified a service bulletin to reprogram the ECM with calibration updates to correct a software anomaly. Anomaly? Really GM? I could accept something like this for the first units off the line with a new model year, but a year+ later not so much. Anyone else experienced this? Sent from my iPad using Tapatalk