Here I am again! '97 Yukon "drifting"?

[stevo1975]

So here goes. You notice when you romp on it from a dead stop your back end slides to one side? That seems to be the case with my Yukon at highway speeds (and I gaurantee with that unmanly 235 horses my tires are NOT breaking loose). I know my rear shocks are toast, but I'm guessing a driveline problem somewhere? I just changed ball joints (not fun), but when I accelerate at highway speeds it feels like the front end drifts left, and the back end drifts right. When I let off the gas pedal the opposite happens. Anyone else experience this?

 

[BoxerPitMix]

Mine used to bounce sideways over bumps, a couple of times it was scary. New shocks helped a ton, but eventually found the culprit was a bent rear wheel!

 

[sntrym]

I would look at your leaf springs as well. If they are sagging, they aren't supporting the weight transfer on acceleration properly, possibly causing the drift.

 

[laidbackbigun]

Could be leaf spring bushings as well. if they are shot will let rear end move sideways.

 

[Hipster]

Broken leafspring center pin is another thing to check out, but usually you'll see evidence on the spring and some noise.

 

[stevo1975]

Thanks a bunch guys. I may just replace the leaf springs and bushings right along with the shocks. Forgot to mention how much the back end sags when the gas tank is full. It's sad.

 

[Supercharged111]

I had an issue before on an AWD Celica that ended up being about an inch of toe in. Not the case here I'm sure. Why don't you have a friend brake stand it in both directions and look for something to move more than it should?