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PacksAWallop

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Everything posted by PacksAWallop

  1. PacksAWallop
    So far so good. Have put another 4,500 miles on, and seems to be functioning normally. The issues it was having previously have somehow disappeared. Not sure how that happens in a mechanical system? I won't complain. The truck is a little bit noisy at the engine on start up. Sounds like something along the accessory belt? Water pump, alternator, something? But that's probably to be expected after having the engine torn apart.
  2. PacksAWallop
    Based on how quickly they got the first repair done, I would say they could get to work on it pretty quickly. Fortunately the dealership and employees that I've been working with there have been great. 0 complaints from me for them. But at this point I'll just keep running it. Maybe it breaks again, maybe it lasts. Maybe I'll see what a trade looks like. Not totally sure what to do yet.
  3. PacksAWallop
    Mechanic at the dealership said it could potentially be a problem with the actuators that they use to control the lifters for DFM. The problem is that they're so difficult to repair/replace that GM doesn't allow them to even touch them unless they're certain that is what's causing the problem. GM Customer Service is about useless at this point, told me the truck would have to fail 2 more times for them to take any meaningful action besides just pointing me back to the dealership for repairs/diagnosis. They want me to leave the truck with them until they can try to figure it out. Not practical for me because they don't have a loaner available. Maybe I should just be glad that it's all warrantied? Really sucks to have such a nice new truck with such substantial issues.
  4. PacksAWallop
    Hit the nail on the head. They can't do anything for me right now, basically told me it would have to fail two more times before any meaningful action can be taken. Directed me to the dealership. They don't even want me to drive it until it fails again, just take it there and let them have it to try and figure it out. Won't be doing that since they don't have a loaner available. The mechanic there mentioned that it could be an actuator issue with controlling the DFM lifters. But they're so difficult to replace that GM doesn't allow them to work on them unless they're certain that is what's causing the problem.
  5. PacksAWallop
    LOL! Appreciate it! I will certainly keep everyone here updated with how GM does.
  6. PacksAWallop
    I actually already have a case opened up with GM. First time it took her 3 or 4 days to get back to me. Tried calling her again yesterday before lunch and had to leave a message. Haven't heard back yet. Would be nice if she could get back to me to try and get something figured out. I've sent an email like you requested.
  7. PacksAWallop
    More bad parts, or maybe something else defective in the block?
  8. PacksAWallop
    I understand that. The point I was making is I'm nine to ten months past the supposed date range. Pretty sure they wouldn't have an engine setting around for nine to ten mo ths waiting to go into a truck. Could I be wrong? Possibly, but that hasn't been the pattern so far. Seems to be within a few months of the truck build date that the engine is built. However I have not checked my engine build date.
  9. PacksAWallop
    Yeah it really sucks. Build date on my truck is 12/21, so the whole engine build date range theory might not hold much water. I think it's an even bigger issue than they're letting on. Also disheartening that the replacement parts don't seem to be holding up, at least in my case.
  10. PacksAWallop
    Got the truck back from the dealer. Put less then 200 miles on it and it's having the same symptoms it did before it failed the first time. Thinking it will drop another new lifter on the way home from work today.
  11. PacksAWallop
    Just got my 2022 GMC Sierra 1500 Limited AT4 with the 6.2 back from getting all lifters, pushrods, cam and everything else associated replaced. 6,000 miles on the truck. Now less than 200 miles from the fix and it's acting the same way it did right before it failed the first time. Thinking it's going to have another lifter failure on the way home from work today..... Super frustrated because it love the truck. But this is leaving a terrible taste.
  12. PacksAWallop
    I was wondering the same thing. Shop managers at the dealership said they haven't had any repeat failures after all 16 lifters have been replaced.... yet. They have however had trucks with one bank replaced only to have the vehicle return later with the opposite side failed.
  13. PacksAWallop
    Yeah, I've been really happy with the way the dealership has treated me on this. Haven't heard from GM direct yet, but not sure what I would need from them anymore at this point?
  14. PacksAWallop
    Update: The dealer dug into the repair a little deeper, and found that the camshaft was scored pretty bad from the lifter failure. So now instead of just replacing 1 bank of lifters and pushrods, it will be getting them all replaced. Also getting a new cam, rockers, timing chain guides, and everything else associated with those parts. Gaskets, bolts, sensors, etc. Hopefully this brand new, rebuilt engine holds up better than the original.
  15. PacksAWallop
    Now there's a scary thought.
  16. PacksAWallop
    Also for anyone who wants to know the signs and symptoms I had before and during the lifter failure, here it is. First sign I noticed was when you'd be cruising along and crest a hill, the engine would back off the power and would start to activate DFM. As it did this it would act as if someone was tapping the brakes hard and fast on the truck, almost like something would be getting caught up in the engine and throw you forward in the seat a little. Felt like a misfire, or a hard bump in the road. As soon as you would give it gas or the engine would go back to all 8 cylinders it would run like normal. This went on for a couple weeks, no check engine lights or codes thrown, btw. Then one day on the way home coming through a round-a-bout and gave it some gas, then Bang, Bang, Bang. Something obviously failed in the engine, and it now had a very loud tick that would speed up with the RPM's of the engine. Still no check engine lights. Pulled into the GM dealer and the tech didn't even have to ask what was going on, just told me to leave the keys in the truck and they'd tear into it the next day.
  17. PacksAWallop
    Unfortunately this is my first post here. But thought my info would be helpful to others. My new 2022 GMC Sierra 1500 AT4 Limited with the 6.2 has been in the shop for a couple days due to lifter failure. The truck had right at 6,000 miles on it when the lifter collapsed and bent a push rod. I called the dealer for an update, and they said parts should be in in the next day or two, then they'll replace the affected bank of lifters..... I asked why they won't replace both banks since the failure occurred in less than 8,000 miles? They told me that particular TSB procedure stopped at the 2021 model year. The 2022's will only have the affected bank side replaced even if failure occurs in under 8,000 miles on your brand new truck. I've opened a case with GM directly to try and get both banks replaced since the parts still seem to be substandard. I don't want to be pulling my camper with my family, and have the truck fail on me again because they only replaced half of the defective parts. I can't even get a loaner from the dealership while the truck is being fixed. Aside from this current headache, I absolutely love our new truck. No plans on getting rid of it, I just want it fixed the right way with parts that aren't inferior. Edit: The truck has a build date of 12/21. Unsure of engine build date, but have to imagine it's close to the truck's build date.
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