fleet guy

Update just got back from dealer. Look at the bearings in rear diff..yes they are too small for it, so when pressed on they spread out. Looks like this may become a recall ...just so that everyone knows they have been working on a fix...it looks like it might soon be here. Waiting on simms as new gear set is bigger. Should get back truck on tuesday. It looks like a bad batch of bearings that where too small. I hope that this fixes my shakes.

Well I have had same promblems for over a year. Shakes around 70mph. Change two set of tires no go. My dealer says they have found what is wrong... the rear diff. Gears are not right. 2014 new supplier of gears and they are bad..the bearings are flexing in the diff and creating vibration. ? It is going in on thursday for new gear set...they said they fix one truck already with 2013 gear supplier and it was great...not all are bad as they say..pinion gear is too big ? This may be a fix...I hope so as it is silly for such a costly truck to shake so much. I will update after tomorrow. Also found out the tires are really bad... I think some trucks have more than one issue. Gm ...whoever is the lowest bidder wins on suppling parts. I wonder what the failure rate has to be , before they do something about supplier...