Dry park test:
with the car on the ground, gut a buddy to turn the steering wheel from stop to stop. You get under the car and look for play in any of the steering/suspension components.
Check wheel bearings & steering/suspension
with the car up in the air, before you take off the wheel, shake the with your hands at the 12 & 6 o’clock position. this will check for play in the wheel bearings. put your hands at the 9 & 3 o’clock position and shake the tire. this will check for play in steering/suspension. play in steering/suspension could be due to inner or outter tie rods or rack and pinion.
Front-end shakedown:
with the car up in the air. put your hand on every steering/suspension component and ‘shake’ the various components in order to detect play or looseness. put a jack under the tire or control arm to unload the lower ball joints. use a pry bar to check for play and looseness. check for power steering/rack and pinion fluid leaks.
Other:
Steering column components, such at the intermediate shaft or u-joints, could be damaged.
They mentioned nothing when I did the alignment.
The amount of play in your steering system may still technically be ‘in spec.’ at least in the commercial driving world, pre-trip inspection requires that no more than 2″ or 10 degrees of play be present at the steering wheel.
This video contains a lot of footage on front-end inspection:
[video]http://www.youtube.com/watch?v=dSWdf_7HcqI[/video]
You might be heading down this road… luckily, señor car guy has a video on a cavelier rack and pinion replacement:
[video]http://www.youtube.com/watch?v=wPvYE7fM-Os&feature=youtu.be[/video]
Final thoughts:
Your vehicle (due to fine GM engineering) is notorious for bad engine/cradle mounts. I would check these first and make sure your cradle does not move around when you shake it (with car up in the air.) I’ve performed this repair many, many, many times.