Joseph J Pahler

I’m thinking injector I’m thinking bad injector

I was able to feel misfire it was shaking the truck when you gave it gas

Just frustrated. took really good care of truck don’t beat it, always did oil changes every 3000

So I removed valve cover and found a bent pushrod?? This explains the misfire

2015 GMC Sierra slt all terrain w/ 6.2. Engine was running fine then service engine started flashing and traction dash light came on. Engine started misfiring on cylinder 6 swapped coil with cylinder 4 computer still says 6 misfire. I replaced all injectors and spark plug with wire and started engine with same results…I’m going to do a compression test on it tomorrow but is there anything else I could be missing? Thanks

So I replaced all injectors and fuel rails with wires . I started truck to find same exact issue- service engine flashing and engine is misfiring cylinder 6. I replaced cylinder 6 plug and it continues to misfire. The engine is quite other than the misfire and shaking? I’m going to get a compression tester to test that cylinder tomorrow. Hopefully it is good.

Just wondering if you found out what the issue was? I have a 2015 gmc 6.2 today my truck did the same exact thing. Computer says cylinder 6 misfire? Dealer mechanic said possible bad injector

I have my 2015 GMC Sierra 6.2 today started my drive to work as I was coming around bend in road my service engine light started flashing and my anti lock light lit. Engine started shaking and whole truck was shaking. Snap on scanner said code u0401 and also engine misfire.

I think they all do!