TAR 71 Posted December 17, 2006 Report Share Posted December 17, 2006 (edited) This morning at 3:30 a.m. on my way home from work I decided to play with the SS a little. I romped on it from about 15 mph and held it until right at 100 mph before I let off, from about 80 to 90 mph I got some vibrations that felt to be coming from the drivetrain. It seemed to be coming from the front, but I know that vibrations can transmit throughout the vehicle. It stopped after 90 mph, it is smooth as silk at all other speeds. The SS only has 28000 miles. Does this sound like the front differential or has anyone had this happen? Any help or suggestions is greatly appreciated. Thanks, Tim Edited December 17, 2006 by TAR 71 (see edit history) Quote Link to comment Share on other sites More sharing options...
04CHASE Posted December 17, 2006 Report Share Posted December 17, 2006 did you lower it at all? Quote Link to comment Share on other sites More sharing options...
montanass Posted December 18, 2006 Report Share Posted December 18, 2006 My guess would be tires... it is very unlikely that they are perfectly balanced and at that speed is where the vibration is most apparent. If your front tires are cupped due to lack of rotation this will make the shaking more severe. It is a truck, with AWD... not really designed for speed... Not going fast but getting there quick... Quote Link to comment Share on other sites More sharing options...
TAR 71 Posted December 18, 2006 Author Report Share Posted December 18, 2006 (edited) The truck hasn't been lowered, yet. The tires are brand new, less than 1000 miles. This was the first time I ran it that fast, and I must say that I was somewhat suprised when it happened. I'll take it tomorrow and get the tires rebalanced. If that doesn't help it, I'll take to GM and let them deal with it. It didn't feel like tire shake, but . It wasn't sustained speed, I ran it up to 100 mph and let off and slowed back to normal speed. Tim Edited December 18, 2006 by TAR 71 (see edit history) Quote Link to comment Share on other sites More sharing options...
edessa Posted December 18, 2006 Report Share Posted December 18, 2006 GM wont help you. They wont brake any speed limit laws to duplicate the problem, so they will say that there is no problem. Quote Link to comment Share on other sites More sharing options...
tawss04 Posted December 18, 2006 Report Share Posted December 18, 2006 mine does it to, I just deal with it, I dont do 80 that often. Quote Link to comment Share on other sites More sharing options...
TAR 71 Posted December 18, 2006 Author Report Share Posted December 18, 2006 mine does it to, I just deal with it, I dont do 80 that often. <{POST_SNAPBACK}> I assume that this could just be the nature of the beast? I don't go that fast often either, I guess I'm just nervous about something going wrong with the front end. I went and had the tires rebalanced and they were fine. It goes in next week to have the dual climate control replaced, I'll have them see if they find anything else wrong while it's there. Thanks, Tim Quote Link to comment Share on other sites More sharing options...
NashSS Posted December 18, 2006 Report Share Posted December 18, 2006 Mine vibrates at a high speed to so but i dont go that fast anyways just when im mad or feel like drawing xtra attention to myself but the truck does alot of it on its own Quote Link to comment Share on other sites More sharing options...
wody Posted December 18, 2006 Report Share Posted December 18, 2006 (edited) i've got the same problem, im just affraid to take to the dealer and tell them to go 80-90 mph. either they'll say its abuse or somthing bogus. Alan Edited December 18, 2006 by wody (see edit history) Quote Link to comment Share on other sites More sharing options...
TAR 71 Posted December 18, 2006 Author Report Share Posted December 18, 2006 i've got the same problem, im just affraid to take to the dealer and tell them to go 80-90 mph. either they'll say its abuse or somthing bogus. Alan <{POST_SNAPBACK}> I hadn't really planned to tell them 80 or so, I just kinda hope maybe they'll find it on their own ;) . Tim Quote Link to comment Share on other sites More sharing options...
wody Posted December 18, 2006 Report Share Posted December 18, 2006 i've got the same problem, im just affraid to take to the dealer and tell them to go 80-90 mph. either they'll say its abuse or somthing bogus. Alan <{POST_SNAPBACK}> I hadn't really planned to tell them 80 or so, I just kinda hope maybe they'll find it on their own ;) . Tim <{POST_SNAPBACK}> how are you going to describe it? "at high speeds"? you gunna take it down to the dealer? Alan Quote Link to comment Share on other sites More sharing options...
Black2003SS Posted December 18, 2006 Report Share Posted December 18, 2006 Mine does it too on acceleration above 90mph. It sounds liek the whoel drivetrain is going to fly apart. I thought it was the tranny or front diff myself. The truck even feels like it is struggling at that speed even though it continues on to 120+mph in a very timely fashion. But it does feel like somethign isnt right, like something is out of balance somewhere, something other than the tires ebcause my tires were new as well. Quote Link to comment Share on other sites More sharing options...
TAR 71 Posted December 19, 2006 Author Report Share Posted December 19, 2006 i've got the same problem, im just affraid to take to the dealer and tell them to go 80-90 mph. either they'll say its abuse or somthing bogus. Alan <{POST_SNAPBACK}> I hadn't really planned to tell them 80 or so, I just kinda hope maybe they'll find it on their own ;) . Tim <{POST_SNAPBACK}> how are you going to describe it? "at high speeds"? you gunna take it down to the dealer? Alan <{POST_SNAPBACK}> I'll probably tell them it's at interstate cruising speeds and hopefully they'll find it. I've been a service writer at a couple dealerships when I was younger, if the tech's at this dealer are like some the of ones I worked around, they'll find the vibration. I've seen vehicles like this get put through it's paces on a few occasions by the tech supposedly trying to find a problem. Not that I want someone to take my truck out and abuse it, but if that's what it takes to find the problem (if there is one) and hopefully get it fixed, so be it. Not that all tech's do this, I don't mean any offense to anyone, I'm just telling my experiences. Mine does it too on acceleration above 90mph. It sounds liek the whoel drivetrain is going to fly apart. I thought it was the tranny or front diff myself. The truck even feels like it is struggling at that speed even though it continues on to 120+mph in a very timely fashion. But it does feel like somethign isnt right, like something is out of balance somewhere, something other than the tires ebcause my tires were new as well. <{POST_SNAPBACK}> That's exactly what I'm talking about, if this is something normal (I'm doubtful of this) then I'll relax and leave it alone. As everyone knows, these trucks aren't cheap and I've spent way too much money on this thing to be driving it around with possibly something wrong with it (if that makes any sense). I need to know, my warranty is up in Mar 07 if I don't buy an extended warranty. Thanks everyone for the replies. Tim Quote Link to comment Share on other sites More sharing options...
KJT13 Posted December 19, 2006 Report Share Posted December 19, 2006 i've noticed the same thing since day one of owning it. mine came with 22s so i chalked it up as a balancing issue. Quote Link to comment Share on other sites More sharing options...
desrtrat Posted December 19, 2006 Report Share Posted December 19, 2006 i would rotate the tires and see if it goes away. if it does, have them rebalanced. i rebalance mine every 6k and rotate them. have you ever removed your frount drive shaft? when the dealer replaced my frount diff. there was a vibration in the frount at speed, and they took the shaft and rotated it 180* and reinstalled it and it went away if there was no problems with it before the tire replacement, and balancing has not changed it then you may just have a bad tire. i still have stock tires on mine, and i run 75-80 all the time and it's smooth good luck Quote Link to comment Share on other sites More sharing options...
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