Regen issues, jackhammering.
Senior User
Joined: Jun 2012
Posts: 187
Likes: 2
Honestly, I didn't ask. I assumed it had to do with one of the previous posts.
I called the service department yesterday about my low coolant level and was told it probably burped out the air. They said to swing by and they'll fill it up. On my way there to get the coolant topped off, the truck went into regen mode and I tried to reproduce the shuddering / jackhammering effect with zero success. So it appears to be fixed, but I'll try it out on a few more regens before I'm convinced.
So what's your take on the PCM flash keeping the regen mode on one head bank and not going to both due to emissions claim?
I called the service department yesterday about my low coolant level and was told it probably burped out the air. They said to swing by and they'll fill it up. On my way there to get the coolant topped off, the truck went into regen mode and I tried to reproduce the shuddering / jackhammering effect with zero success. So it appears to be fixed, but I'll try it out on a few more regens before I'm convinced.
So what's your take on the PCM flash keeping the regen mode on one head bank and not going to both due to emissions claim?
Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
I asked them why they didn't replace both sides if the valves and/or spacing differed. I didn't get a solid answer. As far as burping, IMO, they forgot to refill the coolant. It was at the bottom fill line on the radiator.
Honestly, I bought the truck and warranteed the heck out of it so I wouldn't have to babysit or handle issues if and when I'm on the road. I thought all the bugs were worked out by 2016. It seems like no matter what, I'm constantly managing the dealership in Northern Colorado. It appears as thought their service writers have no clue how to properly log the maintenance and service items to coincide with my warranties. I had an outstanding dealership in SW Idaho, but relocated for my career and now the dealership here is garbage by comparison, yet they claim to be the best dealership in the nation.
Honestly, I bought the truck and warranteed the heck out of it so I wouldn't have to babysit or handle issues if and when I'm on the road. I thought all the bugs were worked out by 2016. It seems like no matter what, I'm constantly managing the dealership in Northern Colorado. It appears as thought their service writers have no clue how to properly log the maintenance and service items to coincide with my warranties. I had an outstanding dealership in SW Idaho, but relocated for my career and now the dealership here is garbage by comparison, yet they claim to be the best dealership in the nation.
New User
Joined: Sep 2018
Posts: 1
Likes: 0
I have a 2018 and I have major Jackhammering issues during regen. my truck has 11400 miles on it and this is the 5th time I have had it in the shop. I told them not to give it back to me unless they fix it. thay act like they don't have a clue what it could be. this is not good.
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