So I bought my 09 ss about a month ago from another dealership. Last friday at My dealership we had an alignment course for the tech so I volunteered my car, about 30 mins into it they tell me my rear axle is bent ( the front of the passenger rear tire veers outward). So I take it to the dealership I bought it at tonight and they tell me because the rear is lowered it needs shims behind the hub on the right side to correct it. Is this correct? This the way I bought so Im unsure of what springs they are (red). There is no visible damage at all and the only way to tell is on the alignment rack.
Edit according to si rear tow and camber are not adjustable - replace damaged suspension as necessary

 

has the car ever been hit? if its been hit in the rear on that side its very possible the torsion beam could be bent. i just had that issue with a kia soul(same priciple torsion beam) ive aligned my car about 10 times with various different setups from coilovers to springs and ive YET to have an issue with the rear being out of line. theres no adjustment.

 

Clean carfax and no visible damage on the vehicle. I left it there but im going over it with our techs tommorrow. Thats what si states but im unsure of shims and think thats just a bandaid

 

dont relay on carfax because its a load of crap....unless there was a police report filed or insurance claim it wont be there. someone could have ran something huge over and never realized it bent slightly.

 

is this toe that is off?

 

I forgot what it was exactly is off but the right rear tire is going out in the front like its making a right turn lol

 

toes off it seems...... caster is front to back..... beams probablly bent

 

Thats what I think Springs should not effect the the wheel direction in the rear if its still a solid beam. Same as a truck.

 

My rear axle is bent to. Had it on a alignment machine and there was nothing I could do. Machine said there was no adjustment.

 

exactly.

there is no adjustment. well there is BUT ONLY IF YOU HAVE THE TIME ATTACK BEAM LIKE LS1FBODY. the stock beams have absolutely no adjustment so if the toe is off or the caster is off the beams bent.

 

This blows because they just want to shim it and be done.

 

DO NOT LET THEM DO THAT. order a new beam and install it.

 

I left them a message for the advisor or manager to call me before any work was done to it. Every where i look States the same thing as this conversation. If worse come to worse i can possibly get it covered by powertrain warranty (rear axle falls under this) at my dealership. new one my price is 800!!!

 

better put your stocksprings back on before trying the warrenty

 

I work at chevy lol, the chrysler dealer I bought it from sold it to me with them. me getting my manager to let me do that might be hard though

 

it can be done on jack stands. not hard to do it at all.

 

I meant getting my manager to cover the axle under warranty. Im not rich, I will buy one if I have to But I certainly dont want to.

 

they should cover it...its under warrenty and you bought the car like that.

 

I wish I could find something from gm stateing not to use shims, That would make it a lot easier

 

when the car starts going back for uneven tire ware you will have the whole dont use shim things under wraps

 

OP mines been bent for 2 years, I have no tire wear or anything, honestly wouldn't worry about it. Mines not that bad but it shows when its on the alingment machine.

 

If there is a shim kit available there is nothing wrong with using them. On most torsion/twist beam axle assemblies since the hub bolts directly to the solid beam design there would otherwise be no adjustment on a stock setup and in many times these suspensions types were shimmed from the factory. Sure, replacing the torsion beam assembly may correct the problem but might not be the only solution and probably isn't the cheapest. I haven't looked yet but what does the factory service manual recommend?

 

Straight from gm service information: Rear camber and tow are not adjustable. Replace any damaged suspension components as necessary.

 

same here!
my rear toe is off on the drivers side rear and its not adjustable, yet there are no ill signs of tire wear or anything like that.

 

You can't shim the rear hubs on a TC without adversely effecting the brakes because the caliper mount is welded to the axle and does not move with the hub.
anyone have any comment on this? Just some info I pulled from another post here