Steering slop?
Is it the rack or tierod ends?
I taped a hot dog roasting stick to my steering shaft and just moved the steering wheel slightly, verifying that the shaft was doing what the wheel did.
I made the mistake of replacing the rack before I did enough testing, turns out my LT1 ragjoint on the steering shaft was junk. Replaced with solid LS unit and havnt had issues since.
What year is the car? How many miles on it?
Only if it's an LT1 car, I believe. As far as I know, when GM switched to the LS engines, they changed the steering shaft, and the newer one doesn't have the rag joint.


