Ed Zachary...
The bolts that hold the upper part to the lower part are loose....they tend to loosen over time on just about ANY tilt wheel, but GMs are really bad. Ya gotta get the wheel off, and pull the turn sig switch up far enough to get to the bolts. It takes a small socket, too, but I can't remember the size off hand.
You will also need to lock the telescopic part of the column to get it apart, and back together.
If you do a search on the subject here, you'll find a few threads explaining how exactly to do that...it gets a little complicated to explain, but it's really not all that hard to actually do.
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Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"