[nxtruck]

Thanks for the replies, fellas!
Clyde65, after looking in my Truck Shop catalog a little further, I did see some column parts listed (namely, the lower bearing). Thanks for the heads-up!

chevyrestoguy,
I can't thank you enough! This is a great description that you gave for going thru one of these columns. Based on the info you listed, I believe I may have traced the problem I'm having with this column. I believe the lower bearing is shot, and from what you're saying, the column will have to come out to replace it. I replaced the turnsignal switch last summer, which included the upper bearing, but didn't go any further than that. The steering shaft still has some play in it, which causes the t/s cancelling cam to catch on the pivot cam, and also causes some erratic popping when turning corners with the truck. I'm hoping that replacing the lower bearing fixes it.
Thanks again for all of your help!!