What causes it? My buddy has a tahoe with a mean lean in the back. Toward driver side. He ordered new rear springs. Will this fix it? He has auto ride, I thought that should regulate it but I guess not. The shocks, pump and hoses are all new. We tried to set up the torsen bars in the front but I wouldn't fix it.

 

I've heard that it's from all of the weight being on the left side of the truck, gas tank, battery, etc., which makes sense but I'm not 100% sure. I doubt that a replacement spring will make a difference but it's worth a shot. Maybe someone makes a spring spacer or something that will help.

 

I was thinking a spacer too. He thinks maybe due to weight on that side the spring settled more. I told him to swap springs and see if it fixes it. But he bought new ones.

 

you would need to do a search, but I had found a good thread a while back that had rear spring spacers and front spacers made by GM with the part number. I will dig thru some of my saved threads and see if I still have it.

 

If it was a pickup I'd say throw a 4x4 lift block on the driver side, but since it's an SUV with rear coils that won't work

 

X2. I literally did this about 3 weeks ago. My truck had a serious lean to the drivers side in the rear. I bought the GM parts spacer which is about 1/2" thick and longer u bolts from gmpartsdirect dot com for $25 shipped and now my truck sits perfectly level. Being an suv with the 4 link rear, that isnt an option for you. I would just google like a **** lol, for someone who has fixed this issue.


I read somewhere about someone that was working for GM to straighten out frames bc when the trucks are shipped they are strapped down in the rear only on the drivers side and they have the lean from the get-go because of this. Not sure on that thought.

 

Wow. I'm glad mine is straight. I'll try to dig some stuff up. His is all jacked up. No matter how much we tweaked the bars in front the front would level either.

 

I would suggest finding a good level slab to park and take some reference measurements between frame to slab and body to slab. This to rule out that it is not a body mount issue (rubber compresses). Unrelated but I had to take every one of mine out the first year I had my Avy to add a piece of visqueen plastic to get rid of squeaking on turns and bumps, this fixed it but not until after I had already chased my tail on all the other suspension parts. Cheers

 

If he has the rear air shocks, make sure the left one is not leaking. That will cause a lean as it happened to my escalade a while back.

 

How much lean is there. Here are the two options I came up with. If you've got close to an inch of lean get a set of zero rate add a leaves which are basically a steel 1 inch lift block with locating pins designed to be added into a pack so its not like stacking lift blocks, these things are secure, or GM had a cast iron 1/2 inch thick "block" with a locating pin that you can put in there as well. My 99 had a half inch of lean so I went with the GM shim block and it was about 8 bucks I think. I was meant to be used only on 2wd trucks and said longer U bolts were required but I proved them wrong on both counts. With the bars turned so the front was level it was still low on the LR so I put the shim block in and got the rear leveled up. The stock u bolts were plenty long enough so that when the block was in and all tightened down I still had about 3/16" of threads sticking out past the end of the nuts. Been that way for a couple thousand miles now without any issues.