Anyone else have issues with cylinders misfiring and fuel injection error code?

[jtbuch]

Started my trail boss yesterday and immediately felt the engine was running rough. I then received notification that something was wrong with the emissions system. One notification stated to have service performed within one day and the other within seven days. Shortly after that the forward collision warning stayed on the dash and the traction alert popped up and I believe it said to service it also. I have an aftermarket error code reader and it came back with error codes P0304 and P2156. Has anyone else ran into these issues? I only have 1,860 miles on my 2022 Silverado 15004WD Crew Cab, Short Bed LT Trail Boss. I have since had it towed to a local Chevy dealership but they will not look at it until Tuesday October 18, 2022.

 

[Jmzvet]

Maybe the dreaded valve/lifter issue that has plague the 5.3 & 6.2 engines for several years

 

[SDSooner]

Just had all of those indications last week with my 2021 TB. Was the lifters and a bent push rod. Took them 3 days to fix for me and then back on the road and handling great!

 

[Bcmountainman]

Just had all of those indications last week with my 2021 TB. Was the lifters and a bent push rod. Took them 3 days to fix for me and then back on the road and handling great!

Same thing happened to mine. Lifter pushrod and cam.