Accelertion vibration 30-50

[yoda009]

I have a 2010 suburban lt 4wd with 170k. I got hosed on it from my ex wife and the thing was beat when I got it. Replaced all 4 front control arms. Both front cv axles. Both front hubs. I have a vibration that starts from 25 mph to about 45mph. It will stop as soon as I let off the pedal. Last week I found the drivers half shaft leaking. Got bearings and a seal. There was play in shaft coming out of axle. Went to change them and shaft no longer had play. Replaced seal and left bearings. Verified half shaft was locked into axle. Noticed the cv axle on driver side was smaller then pass. So I bought a new one from car quest and put it in yesterday. Still have vibration that used to only be 25-35 and now seems to Come in higher speeds up to 50. Completely lost and yes i replaced both u joints and balanced the drive shaft (I'm a diesel tech) any ideas?

 

[petethepug]

Welcome, nice work covering what you already have. I’m thinking the torque converter based on milage.

 

[Marky Dissod]

I have a 2010 suburban lt 4wd with 170k. I got hosed on it from my ex wife and the thing was beat when I got it.
Replaced all 4 front control arms. Both front cv axles. Both front hubs.
I have a vibration that starts from 25 mph to about 45mph. It will stop as soon as I let off the pedal ...
Still have vibration that used to only be 25-35 and now seems to Come in higher speeds up to 50.
Completely lost and yes i replaced both u joints and balanced the drive shaft (I'm a diesel tech) any ideas?

Change ATF & filter.
Can you manually shift to a lower gear (3rd)? Suspect torque converter clutch. Bet she never changed the ATF.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.