I am starting to have a problem with my truck at highway speeds. It kinda rocks back and forth. I have had this problem a couple of times when I have a lot of weight in the bed. Now it seems like it is doing it with nothing in the back . What causes it and how do I get rid of it?
Swaying at highway speeds
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jagman1995
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Did you front and rear springs or is all of this work on the rear only? Other thing to check would be sway bar end links. If there's looseness in either end those bushings, might be contributing? Do you have a tonneau cover, or cap, maybe its some wind buffeting that's exacerbating the problem?
Yes everything has been done in the rear of the truck. It gets more pronounced with more weight in the back. That is why I was solely working in the back. I do have A bed cover. I might think about the tires next but that will be a couple of years down the road. It also does not do it while I am towing my camper either.
How about air bags. I just got my Air Lift 5000 bags but have to install them yet. I'm told it helps with the sway.
I went with a little heavier springs from tuftruck. I didn't want to go the air bag.
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148 Posts
I bet dollars to donuts it's your tires. Mine did the same thing.
Try grabbing onto yoyr bedside and shaking the truck side to side. It was crazy how much the wheel moved back and forth as the tire sidewall moved. I added pressure to the rear tires and it went away.
Try grabbing onto yoyr bedside and shaking the truck side to side. It was crazy how much the wheel moved back and forth as the tire sidewall moved. I added pressure to the rear tires and it went away.
I tried the same thing. Even went one pound over. It didn't change a thing.
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Did you ever figure this out? My 16 has started to do the same thing. First noticed under a full load of mulch this spring and now its doing it under lighter loads.
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Try anew or at least new bushing on the panhard bar. If the truck has lifted it will need to be lengthened so the truck doesn’t crab. If that or the control arms are loose and or worn out bushings that will be your sway.
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Anybody figured out this sway problem? My 2009 does it at any speed over 40 mph
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I have a 2017 ram 1500. I have the same problem. Also some times feels like my rear end sways when I suddely let off the throttle. I got air bags in the back, new shocks all the way around, new springs in the rear, and new away bar links and bushings all around. Everything seems right and as it should be.
I first started noticing these problems at about 80k miles I now have little over 100k.
I am starting to loose hope in fixing the problem.
I tow a 6x12 enclosed trailer quite often. And it has gotten to the point where it is actually almost scary to pull a trailer cause the trailer magnifies the issues.
I first started noticing these problems at about 80k miles I now have little over 100k.
I am starting to loose hope in fixing the problem.
I tow a 6x12 enclosed trailer quite often. And it has gotten to the point where it is actually almost scary to pull a trailer cause the trailer magnifies the issues.
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15,732 Posts
Had the same issue. Bumped up tire pressure to 42 psi on stock Goodyear tires, no more sway. Tired only lasted to 20000 miles though.
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update, it WAS the rear control arm bushings. both upper and lower control arms bushings in the rear passenger were bad. I replaced all 4 just cause. hard to get them from auto parts stores though so I ordered strait from dodge dealer.
thank you for all the help, this has been driving me crazy for months now.
thank you for all the help, this has been driving me crazy for months now.
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1,731 Posts
Experience,reading a lot of different forums, trying to stay up to date on current and new products ,parts and pieces. Fortunately we also have some excellent dealer technicians. However it doesn’t hurt to double check things.
I think the problem discussed in this problem is very common among truck drivers) you know, when you spend equal time with your wife and your mechanic, you have a lot of experience to share 
but I was always afraid to comment on forums because you never know the whole picture and can give a wrong advise. I have read somewhere about a guy who wanted to clean the car seats and someone advised him some solution. In result, he had to change the sets. That`s why I use forums more to read and then I always double check on reliable resources) if you are really interested, you will find a lot of platforms like Difference Between Highway and Freeway (With Table) – Ask Any Difference with great information written by specialists.
but I was always afraid to comment on forums because you never know the whole picture and can give a wrong advise. I have read somewhere about a guy who wanted to clean the car seats and someone advised him some solution. In result, he had to change the sets. That`s why I use forums more to read and then I always double check on reliable resources) if you are really interested, you will find a lot of platforms like Difference Between Highway and Freeway (With Table) – Ask Any Difference with great information written by specialists.
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5 Posts
I just had the same issue and posted about it. I was hauling furniture from South Carolina and the truck Rocked back and forth, when I hit a bump it would become more violent and the cruise control would shift off and cause the truck to decelerate rapidly. The first time it happened I thought the trans was going out.
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According to the tire pressure sensors everything was at 40 except for one which was at 39. We have 70,000 miles on the truck never experienced anything like this before.
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