I find when driving randomly the rear end of my c5 99 sways either way causing me to have to correct the steering by steering wheel. It does this randomly at any speeds. The rear shocks have been replaced and the rear sway bar end links are new. I checked everything when changing the rear end fluid yesterday and everything was tight. I did change one tie rod end and one of the tie rod end main support bars because it was slightly bent that bolts to the middle rear end subframe on the left rear when changing rear end fluid. I adjusted it as close as i could to what came of the car 17 turns. I shaked both rear wheels are tight not loosely hanging. Could it need an alignment? What would cause the rear end to sway on a c5 corvette randomly when driving. i just noticed they have the tie rod ends in rear for adjustable toe. Ive had two z28s one 95lt1 6 speed and a 98 ls1 six speed and never had this problem.

Took it out tonight does seem worse after me randomly changing the left rear drivers side rod that was bent but even before the rear end was swaying. COuld need alignment? Midas told me would half to see if it fit on the machine itll get caught in the middle i think is what he said. Those 2.73s are killer i forgot traction control off was with the button and light on as it reads thru digital cluster "traction control-off" with the button pressed and cluster sideways light on. Took off pretty nasty thru first.

 

An alignment is your first action. You may have matched the number of turns on the old and new tie rods but the one you removed was bent and therefore not the same length.

 

the dude left the njts off the front to get 1.5" of lowering i guess i read you could only adjust 1" on stock bolts without the nut get extra half inch. Yes i know waiting on amazon to ship the hood struts. Thats not normal correct should have nuts the rear end has about 2" of thread and nuts. ANYONE KNOW WHAT SIZE THREAD NUT so i can run up to lowes get some. The bolt measures a half inch thick with threads



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I have a thread in here that describes your same exact issue. My car felt like I was going over 100mph at 60mpg, it sucked! My rear upper control arm bushing sleeves were egg shaped.
Jack the car up and try to move the rear wheels by grabbing the tire at 12 and 6 o'clock and then 3 and 9 o'clock, see/feel if there is any play. I had A LOT!
I put new GM arms in there and different bolts, it is perfect!