Yukon denali shake

[08grey]

So I have a shake since input on the 22's from 65 mph up. I road forced balanced twice to make sure it was dead on and it seems to have made it worse. I have read that the u joints are my next point of inspection. I have looked them up on rock auto and there seems to be lots of quality options of u joints. Does anyone else have experience with a shake and the fix they can share.

 

[mfdrookie516]

Before you go through that hassle, try putting on another set of wheels that don't shake/vibrate on another (or your) vehicle. I'm currently going through the same thing with my tahoe. The place I bought the tires from had me roadforce them, and they checked out, but it's just as bad (if not maybe worse). They're replacing the tires to try and correct the problem, as the factory wheels/tires don't cause the problem.

 

[08grey]

I wish I had another set to try. I can't afford new tires right now. I am hoping its not the tires.

 

[08grey]

Anyone?

 

[felixgun]

This happened to me before and as soon as I got it re-balanced, the issue was fixed. Maybe get them balanced at a different place?

 

[livingez_123]

are the wheels hub centric fit? they will give you the best fit.
If you have lug centric fit they make rings that fit on the hub center and they center the wheels to the hub.

 

[08grey]

There are gm wheels.

 

[08grey]

Bump. New tires And still shakes. Now at 75+. I noticed the rack has play back and fourth. But not sure if that's what's doing it. Goes to the dealer wens day to check the rack play.

 

[Blazed]

I bet that's your issue. I remember you had an issue previously with another steering component correct?

Question tho! Does the shake only occur while under throttle?

 

[08grey]

I had this rack replaced in feb the old one was leaking. Now the new one moves a quarter inch plus side to side on wheel lock. I haven't tried to tell if it still shakes if i get off the throttle, great question. I took a quick video of it I will try to get a link for it posted for your opinion.

---------- Post added at 10:20 PM ---------- Previous post was at 10:07 PM ----------

http://m.youtube.com/watch?v=yoq9Vm...ch?v=yoq9VmvSrXU&feature=youtube_gdata_player

Phone fell at the end but you can see the play good right before the video ends.

 

[Blazed]

I honestly don't know what I'm looking at in that video haha but if it doesn't do it while cruising and only under throttle maybe it is something to do with the AWD system.

 

[08grey]

Okay so drove 700 miles today with the shake and can't help but think I am doing damage to this truck.

Here is what I have done so far.
New tires installed
Fixed one rim that we found had a minor bend
New rack and pinion
Wheel alignment twice to be certain.
Front end components inspected

I am stumped at this point. This shake started when I installed the factory 22" rims. It only shakes bad at 70. You still feel it even when you let off the throttle.

Of course the speed limit most of the way was 70 so It drove me crazy for 12 hours of driving today.

 

[Blazed]

I'd like to hear the resolution once you find it.

---------- Post added at 02:47 PM ---------- Previous post was at 02:47 PM ----------

I have kind of been wondering if it is possible for the cv axles to be "off balance" and cause a shake.

 

[HD4]

High speed shake is usually tire balance issue from what i was told. Had new Michelin tires put on by dealer and they could not balance right (shaking around 70 mph), took it to local high volume tire place and they balance them out perfect smooth all the way to 85mph. Larger tires and rims are harder to balance out perfect

 

[Blazed]

Go find a shop with a road force balance machine that'll knock out that possibility

 

[08grey]

I did the road force balance but haven't gotten it up to speed yet. I will advise.

 

[Blazed]

Nice can't wait because I was hoping to go get road force balance today.

 

[08grey]

So I have news. Weird but news.
After the road force balance ride is considerably smoother. Actually up to 60 is smooth as can be.
70 plus there is a vibration that comes and goes.

80 plus less vibration than 70.

I think I may have a wheel out of round so little thought that the balancer doesn't pick it up.

Here is the kicker.

The vibration gets worse when cross highway winds get up under the truck. When traveling along side farms on both sides where the winds were hard the vibration was bad.

 

[Blazed]

That is extremely weird.

 

[sickk23]

I bought a 2012 LTZ suburban, new. I bought it out of town, drove it 6 hours home with the worst vibration of my life. I had it in the shop multiple times (I think 6 times) for that damn vibration. It was at like 45 on a smooth highway then on any road it started at 62 and came and went from there on but was consistent after 85 (mph of course). It had factory chrome 20"s. I ended up dumping that pos for something else but in the end I learned it could have been caused by the autoride. I guess it's a common problem? Dunno..
I also had an '09 Z71 hoe with 22"s and the only vibration I had was a slight one at 70-72.