Lifter issues resolved?

[21BOSS4X4]

So youre saying then that there is a 100% fail rate on these lifters?

When I picked up my truck today I asked them a few questions. One was about the failure rate of the AFM lifters… they do tend to fail more often, but lifters still fail on the non AFM lifters, and that even if you did the delete on the lifters and turned AFM off, the lifters still will eventually fail. It’s a part problem overall.

 

[BorakTrailBoss19]

So youre saying then that there is a 100% fail rate on these lifters?

I wouldn’t say it’s a 100% failure rate. I’m sure some will last a long time. I didn’t think I was going to have lifter problems because how many miles were in my truck. The old saying was if you get past 30k you’re probably in the clear. Most of the time lifter failures happen early. All I’m really saying is that the 5.3’s and the 6.2’s all have lifter issues, and even if you do the AFM plug in blocker, or turn AFM off if you do a delete kit on your truck, it doesn’t mean the lifters won’t fail. My next go around will be the 3.0 diesel. I know a few people that have them and love them. Plus as of right now zero issues with the 3.0 that I know of. I wanted the 3.0 but I couldn’t get it in my truck in 2019. Lifter issues started in 2009 I believe when GM gave the contract to a low bidder. The Torrington company made the roller bearings for GM from 1981 to 2009. Apparently this was a non issue during that time. At least not as big as today. It’s the roller bearing that fails and then mushrooms against the cam shaft.

 

[BorakTrailBoss19]

So youre saying then that there is a 100% fail rate on these lifters?

I wouldn’t say it’s a 100% failure rate. I’m sure some will last a long time. I didn’t think I was going to have lifter problems because how many miles were in my truck. The old saying was if you get past 30k you’re probably in the clear. Most of the time lifter failures happen early. All I’m really saying is that the 5.3’s and the 6.2’s all have lifter issues, and even if you do the AFM plug in blocker, or turn AFM off if you do a delete kit on your truck, it doesn’t mean the lifters won’t fail. My next go around will be the 3.0 diesel. I know a few people that have them and love them. Plus as of right now zero issues with the 3.0 that I know of. I wanted the 3.0 but I couldn’t get it in my truck in 2019. Lifter issues started in 2009 I believe when GM gave the contract to a low bidder. The Torrington company made the roller bearings for GM

 

[21BOSS4X4]

I wouldn’t say it’s a 100% failure rate. I’m sure some will last a long time. I didn’t think I was going to have lifter problems because how many miles were in my truck. The old saying was if you get past 30k you’re probably in the clear. Most of the time lifter failures happen early. All I’m really saying is that the 5.3’s and the 6.2’s all have lifter issues, and even if you do the AFM plug in blocker, or turn AFM off if you do a delete kit on your truck, it doesn’t mean the lifters won’t fail. My next go around will be the 3.0 diesel. I know a few people that have them and love them. Plus as of right now zero issues with the 3.0 that I know of. I wanted the 3.0 but I couldn’t get it in my truck in 2019. Lifter issues started in 2009 I believe when GM gave the contract to a low bidder. The Torrington company made the roller bearings for GM from 1981 to 2009. Apparently this was a non issue during that time. At least not as big as today. It’s the roller bearing that fails and then mushrooms against the cam shaft.

My truck does not have AFM or DFM. My understanding that in 2021 there was a period of time where they didn't have the computer chips for the AFM so they built the trucks without it and provided a $50 credit. I have one of those trucks that does not have it. I'm assuming though it still has the same lifters as if it had AFM. I just recently purchased it used 2021 5.3 with 22,000 miles and it's originally a Canadian vehicle that I now own in WI. so I guess time will tell.

 

[BorakTrailBoss19]

I’d just look into any warranty you can still get with it from the dealer if that’s where you got it from. As much as I hated paying for this repair, Feels great to be back in my truck.

 

[mrcolieman]

My thoughts from the Active Fuel Management thread seem appropriate on this thread as well... Bow Tie Till I Die!

Active Fuel Management

This should be reposted weekly. Not sure why it’s so hard to understand. Except for the fact that it is being blown completely out of proportion. How many at this site have had lifter failures? How many of the more than Five Million of these trucks sold have suffered it? Is it true that every...

www.trailboss.org

 

[Transient]

I love it when my truck breaks. I'm not being sarcastic, nor joking about this. When it breaks I roll my sleeves up and fix it. If I don't have the tools I find out what I need and buy them. I don't trust the stealership techs to do as good of a job as I would do. Likewise, if I fixed somebody else's car for a living I'd probably cut a few corners to get the job done too. Unfortunately, my truck has been leaving me with nothing to repair so far. I have a 2020 that was one of the first ones built right after the factories reopened from their COVID lock downs. It's been a great truck so far. I'm closing in on 58,000 miles on my 6.2.

 

[j_rock]

These trucks do not have afm, active fuel management, they have dfm dynamic fuel management, and is the reason for the terrible lifter design. Afm ran from early 2k's until 2018, dfm started in 2019. Afm on some models did the v4/v8 indicators on the cluster. It always disabled the same cylinders. Dfm dynamically shuts off curtain cylinders "dynamically" depending on the load meaning not always the same cylinders. It's garbage and if you disable it your chances of of not having a failure are a little better but not a guarantee says every gm tech with the balls to be honest about it.