Intermittent extreme wobble 2015 3500 duelly

Todd1312 · August 2, 2017

Update: A different mechanic had the laptop hooked up and was going to drive it home. Believe it or not it actually happened when he was driving. and I quote him, "It scared the shit out of me". He drove it back to the dealership and took his own truck home. Although the computer didn't throw any codes they did contact GM's technically support and they advised that it was the brake master cylinder after looking at my video. So they had to order a new one to install. Will advise later if it fixed the problem...

calgator73 · August 4, 2017

Crazy! Master cylinder?!

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Todd1312 · August 5, 2017

They called today and apparently that didn't fix the issue. They are now fighting with GM's engineering dept to figure it out..

newdude · August 5, 2017

I'm thinking it may end up getting a new steering gear box.

Dnt · August 6, 2017

I bet they will find some play in one of the suspension parts. (After they replace all other parts LOL) Over the years I can only recall a couple of trucks that did this, the worst one was a Nissan and it turned out to be the Pitman arm. Other was a Ford truck seems like it was a kingpin bushing. You could not tell it when you jacked either truck up UNLESS you knew what part was bad. After diagnosis then it became obvious as you could use a pry bar to move it back and forth and see the approx 1/16" play. It really does not take very much play to create a wobble and once it starts wobbling you would have to basically stop the truck. Violent and Weird feeling that is for sure and very disconcerting not knowing when it would decide to do it.

John JC · January 28, 2020

Do u have the video to share? We are having the same problem and no one can figure it out

tlaw91 · February 2, 2020

Needs new steering box sounds like. I’ve done them before, RPO NV8.

Electronically variable assist can cause many interesting issues, including yours. I hope they get it fixed!

-Friendly neighborhood GM tech

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tbrannan619 · May 21, 2020

On 2/2/2020 at 10:05 AM, tlaw91 said:

Needs new steering box sounds like. I’ve done them before, RPO NV8.

Electronically variable assist can cause many interesting issues, including yours. I hope they get it fixed!

-Friendly neighborhood GM tech

Sent from my iPhone using Tapatalk

Anything come about the problem. I have a 2015 2500 that has an extreme wobble and pulls hard to the left but only after driving it for a few miles and it gets hot. Once it gets going down the road and is air cooled it stops pulling left and the wobble is gone. If I hit the brakes while it’s wobbling it try’s to throw me in the ditch.

tbrannan619 · May 21, 2020

Anything come about the problem. I have a 2015 2500that has an extreme wobble and pulls hard to the left but only after driving it for a few miles and it gets hot. Once it gets going down the road and is air cooled it stops pulling left and the wobble is gone. If I hit the brakes while it’s wobbling it try’s to throw me in the ditch.

tbrannan619 · May 21, 2020

Also, I have ran the VIN and went to the dealership with the problem and was advised there is no recalls. N192261050 is a recall from GM that is the exact problem I’m having but they say my VIN doesn’t apply. Any help?

Dunph · December 21, 2020

I had this issue and found out it was my idler arm. It didn't show itself on a lift. You had to jack up one side at a time and move the tire. Blatantly obvious when one tire was on the ground. My idler arm is bad too but I haven't had a chance to replace it. No more death wobble or shimmy in the steering wheel from 40 to 65.