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Discussion Starter · #1 ·
My RAM has been for the most part flawless for 36,000 miles. But ever since I went on a long road trip which involved highways for most of the trip, when I come to a stop it feels like I'm being rear ended. If I come to a stop and apply the breaks hard it doesn't do it. But if I try to do a nice soft stop, it jolts. I had to take it in for a cruise control recall at the dealership, that I received a few weeks prior. The mechanic felt what I was talking about and proceeded after the flashing for my recall to do a "quicklearn". Well the quicklearn definitely improved the performance of the truck, but the bump when stopping has gotten worse. I've already done a couple hundred miles of local driving and its worse than before. Think I'm going to have to revisit Dodge again. Like I said this truck has been awesome for 36000 miles. I've heard from other folks from other forums that this is normal and just deal with it. I don't think so. It ran perfect for 2 years, why now, and why should anyone except this as normal.
Any input would be helpful.
 

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I have 31k and drove my truck to the beach last week. Same issue, no problems before the trip but while city driving down there I started getting the same hard bumps. I haven't done the recall yet. No issues driving back and I haven't felt it since. I'd also love to get any info on this.
 

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There is a long list of people with the 2 to 1 downshift bump. I had it on my 2016 that I ended up trading in, it did it from day 1 though. It at times would feel like I was getting rear ended.

I personally think this is a software issue with the trans but the dealer was never able to do anything for mine. Lots of people have had this problem and very few ever get it resolved.
 

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I notice fed this issue when I test drove mine at the dealership. It had 314 miles on it at the time. Now it only does it when making fast/emergency stops. Doesn’t do it when making slow, gradual stops. My only guess is the lines pressure is still high, causing the shift solenoid to actuate much faster than normal. Which 1st gear being so low of a gear ratio, it will be much more noticeable than if it happened say from a 6th to 5th de-acceleration down shift v
 

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My RAM has been for the most part flawless for 36,000 miles. But ever since I went on a long road trip which involved highways for most of the trip, when I come to a stop it feels like I'm being rear ended. If I come to a stop and apply the breaks hard it doesn't do it. But if I try to do a nice soft stop, it jolts. I had to take it in for a cruise control recall at the dealership, that I received a few weeks prior. The mechanic felt what I was talking about and proceeded after the flashing for my recall to do a "quicklearn". Well the quicklearn definitely improved the performance of the truck, but the bump when stopping has gotten worse. I've already done a couple hundred miles of local driving and its worse than before. Think I'm going to have to revisit Dodge again. Like I said this truck has been awesome for 36000 miles. I've heard from other folks from other forums that this is normal and just deal with it. I don't think so. It ran perfect for 2 years, why now, and why should anyone except this as normal.
Any input would be helpful.
I have 31k and drove my truck to the beach last week. Same issue, no problems before the trip but while city driving down there I started getting the same hard bumps. I haven't done the recall yet. No issues driving back and I haven't felt it since. I'd also love to get any info on this.
Hi hawk99gt and Cody Bear,
I can see how this would be very frustrating. If either of you plan to bring your truck into the dealership to have it looked into to, RamCares would also like to offer you our assistance while your trucks are being serviced. If you're interested, please send us a private message.
Lydia,
Ram Social Care Specialist
 

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I noticed you mentioned that the problem started after a long road trip. I almost wonder if it has something to do with the trans software needing to re-learn driving habit strategies? I'm no expert by any means, but I do wonder if it won't just resolve itself.

I do recall both my 2015 and 2017 8HP70's doing the 2-1 bump when they were pretty new with a couple hundred miles. But after a while it just seemed to go away.
 

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Discussion Starter · #7 ·
They did do a quick learn at the Dodge Dealership, but I've already drove 300 miles since that and it is still doing the same thing. I did try something that I heard some suggest on another forum. I added grease to an area of my drive shaft where it has a rubber boot around one end and applied to the smooth section of the shaft that goes into the boot. I also heard that some folks have this problem with a drive shaft that is a two part shaft instead of a single. Mine seems to be a a single. I'm seeing if this helps or not. Still felt it on this mornings commute.
 

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I have been having the same issues as you guys, coming to a stop and feels like some one has rear ended you. I have taken the truck to the dealership 5 times already and from what I can see they only do the relearn on the tranny, but still get the same results. Has anyone found a solution to this problem.
 

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Are you stopping gently or abruptly? I suspect this may have to do with the driving style of certain people and how it learns
 

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I wonder what is the driving style of people having this issue, I'm asking this because i have a theory that the "relearn" is more like a "forever learning. The reason i say this i think it is relearning all the time, for instance when i first got my truck a few months a go i babied it for a while. Then a couple of times i got on it pretty good a few times in a row. When i went back to babying it i noticed it then wanted to hang onto gears for a while. kinda like tow haul, or reving out a manual. Then after a few start stops, went back to normal. This would make sense to forever learn, say a few people in the family drive the truck, or say when you sell it.
 

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Glad I came across this, my 2016 does this sometimes too. I was about to take it in for servicing but if this isn't a major problem and they cant stop it from happening anyway then I wont worry about it.
 

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it's probably transmission related,.. mine does it time to time, like op said, more after long drive,. but when it did it, I tested it out something,... while going about 35mph, I put my truck in neutral and then brake softly,.. and everything was perfect.. ive tried this many times and perfect each time,. so to me its related to the transmission or components related to

but mine doesn't do it all the time,. it goes away and come back time to time
 

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Discussion Starter · #17 ·
Well I have some good news, it took about 1000 miles, but the bump has stopped. Not sure if it was from the grease I put on the drive shaft or the relearn done by the dealership. It just started getting better little by little till it was finally normal again.
 

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mine does a terrible little bump when I go to take off..like right when I let off the brakes
 

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I have a 2016 1500 sport with 9000 miles. I started noticing it "bumping" when I slow down to a stop about a year ago. I can pretty much get it to happen whenever I slow down.
Any ideas? Should I take to dealership? Still under warranty.
Everything else is great.
 

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mines not a downshift or anything..more like when I take off like the slop is being taken out of something....
 
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