Misfire

[Jmac49]

2021 TB 6.2L...Lifter spring issues. Right bank first then left bank about a month later. Severe misfire/knocking noise. All good SO FAR at 15k miles.

 

[The Liver King]

2021 TB 6.2L...Lifter spring issues. Right bank first then left bank about a month later. Severe misfire/knocking noise. All good SO FAR at 15k miles.

absolutely bananas. anything to save a buck

 

[The Liver King]

2021 TB 6.2L...Lifter spring issues. Right bank first then left bank about a month later. Severe misfire/knocking noise. All good SO FAR at 15k miles.

Audio recording of 5.3L today. - cold start. 40 degrees outside.

 

[Mellygirl27]

2021 Trailboss Check engine light came on, under warranty so I took it to dealer. Engine has a misfire on 1 and 3 cylinder. Waiting on dealer to figure out why its happening. Anyone else have this occur?

That’s exactly what is happening to mine! Currently the mechanics at GMC are stating it’s my fuel injector. But it’s been there for 3 weeks still waiting on a part. So who knows. Had a 2019 trailboss prior to this no issues. So far, 1100 Kms on it and well already a problem.