95jersey

So, I broke 3rd gear in my C6Z06. I had the dealer fix the car under warranty. To take the transmission out and replace the gear, they had to remove the entire rear end assembly. I assume the rear suspension also came out...to a certain degree.

Is it safe to say that my rear allignment is out of wack? Or would they have not necesarily had to touch the excentrics to get the transmission out of the car?

I just got the car back (after 2 weeks) and are wondering if I NEED a reallignment before the next track day? I recently had the car accurately alligned and don't want to have to go through the time and expense if I don't have to...

VetteDrmr

Considering the amount of movement in the four studs the rear suspension is mounted to, I'd say the rear needs realignment.

Have a good one,
Mike

RAFTRACER

Sorry about the trans issues.....too answer your question, I would have the car aligned again. Yes, they did have the entire rear suspension/transaxle out of the car and ,No, they did not touch your eccentrics, but the whole rear suspension crossmember was out of the car, so unless they exactly relocated rear crossmember your alignment is hosed. For some reason GM does not pay for an alignment when they remove the rear crossmember for any repairs/replacement of driveline components.......seems as if they could give a crap about your $2000 set of tires......This has been one of my personal and customers concerns when doing repair of any of the above....I always make the customer align the car after these repairs, even at their expense..

davidfarmer

those alignment pins really don't have much "slop", so I doubt your settings have changed much, but it is certainly worth the money to have it double checked. With a few hand tools, you can easily check camber and toe, and learn to do it yourself. Why buy milk when you can have the cow for free???

http://www.davidfarmerstuff.com/align.pdf

RAFTRACER

Loosen a rear or front subframe up sometime and see how far you can "push" it around with a leveraging device (aka large prybar). I think you will be quite suprised.......... Don't forget to unload the spring before you do it...........

gonzalezfj

Right, as usual, Danny. I have been there and done that. An alignment is cheap insurance for your expensive OEM tires.

Frank Gonzalez

0Randy@DRM

Simple 1/4 inch roll pin in all four corners before you remove the crandle and everything is golden!!!

Randy

CMY SIX

reverse in mine complete replacement told the dealer I expected a complete 4-wheel they did it no arguement!

the blur

Some dealers will do it, some won't.
GMPP is not nice, but some dealers know how to tweak the repair bill so GMPP covers it.

The front diff blew out on my truck. GMPP covered everything, including an alignement.

0ATI Performance

The rear cradle will move around enough for about 0.2~0.3 deg of camber change side to side (what you lose on one side moves to the other). The resultant camber change will also mess up the rear toe/thrust angle.

A common trick to get max net balanced camber if one side gets more than the other is by physically shifting the cradle (big pry bar) to balance the left/right side.

Maybe this is all within GM "factory tolerances" which is why they don't pay for it. Tire wear is not warranty.... But then again the factory alignment on my new C6 Z06 sucked.

Maybe for a street car it is all fine, but not the place to skimp out on a track car that runs at high speeds.

Bob