A wavy of Vibrations as i drive at 50mph

[jaysindix]

I have a 2016 Chevy Tahoe, PPV. I am at about 199400 miles.
I've had the Transmission rebuild recently, and Engine rebuild at 140k

While I drive my Tahoe (everyday), more recently my Tahoe will have a very hard vibration. It's up front and it's only when I'm not accelerating and I'm in the Lower RMPs.

When I press thebgas and climb in speed the vibration goes away. When I coast back to a even speed. The vibration returns. And it comes in waves.

I have a video of the vibration, I don't know if it clear. I'll try to share it.

. This is the video

 

[OR VietVet]

I thought I heard a dull "thunk" noise at the 62 mph and then you acceled and I did not hear again till you maintained speed at around 70-71 mph. If that is it, that is gonna be a PITA to locate. First, you need to look for anything out of place under the hood and under the rig. It is faint enough that and since it happens while maintaining speed, I would look at wheel well covers and check any center caps and inspect ant steering and suspension components. This problem is likely gonna be something that will be a surprise to everyone or something so simple you slap the palm on the forehead.

 

[jaysindix]

I thought I heard a dull "thunk" noise at the 62 mph and then you acceled and I did not hear again till you maintained speed at around 70-71 mph. If that is it, that is gonna be a PITA to locate. First, you need to look for anything out of place under the hood and under the rig. It is faint enough that and since it happens while maintaining speed, I would look at wheel well covers and check any center caps and inspect ant steering and suspension components. This problem is likely gonna be something that will be a surprise to everyone or something so simple you slap the palm on the forehead.

The vibration is a whole vehicle vibration that comes from the forward center of the vehicle, maybe Transmission, maybe axel under the engine. And it's in Waves.

 

[Blackcar]

I would go back to transmission rebuilder let them drive could be torque converter problem.

 

[jaysindix]

I would go back to transmission rebuilder let them drive could be torque converter problem.

I have the unique feeling that they will never see the provision under their warranty, but once the warranty is up, they will rebuild it again for 3k

 

[OR VietVet]

Ok, hard to tell in the video but while in the seat, you know what you are feeling and hearing. Good call, take to the transmission builder and have them roadtest and hope that it does it for them. Best if you can drive and take one of them with you since you likely can duplicate easily.

 

[jaysindix]

Ok, hard to tell in the video but while in the seat, you know what you are feeling and hearing. Good call, take to the transmission builder and have them roadtest and hope that it does it for them. Best if you can drive and take one of them with you since you likely can duplicate easily.

That's a Solid Plan.

 

[Blackcar]

I have the unique feeling that they will never see the provision under their warranty, but once the warranty is up, they will rebuild it again for 3k

Might try another shop and get their view.

 

[jaysindix]

Might try another shop and get their view.

That's actually what I'm gonna do right now...

 

[BeenChevy]

Figure I'd chime in as I dealt with this and resolved it on mine. At first I thought the globs of grease on the rims that sometimes fall off the joints up front - nope, then thought maybe the tires - nope, u-joints - nope, then maybe the torque converter or transmission - nope... then before a big trip hauling the 32' travel trailer 7 deep I decided to hose clamp open the exhaust flapper valve. Problem solved.

Have you found a solution for yours?