I’ve been getting sporadic (only has happened twice in over 3 months), errors on my 2017 Silverado 1500. It is P219A (Bank 1 Air/Fuel Ratio Inbalance). Has anyone had this issue with their Silverado?

 

My 2017 Suburban is having the same P219A issue @ 93k miles. Dealer has been unable to diagnose and issue is intermittent. Idles and runs smoothly. I'm concerned it may be due to intake valve carbon buildup or the infamous injector problems on these trucks. Going to try changing the O2 sensor and running the CRC intake valve cleaner and techron fuel cleaner, see if any of those fix it. Were you able to get your issue fixed?