What? So they bought back an 03 for a steering shaft clunk only, then gave you an 05 for nothing, which btw, still had the steering clunk issue? I have been through a few by backs, and it was dreadful, not to mention they both had major issues, not just a measely shaft clunk. The steering shaft never has been and never will be recalled. They did come out with a new design to permanently fix the issue, but it was a bulletin, not a recall. We used to put those things in left and right, and even good-willed a bunch of them for people out of warranty. But it was never a recall.
Anyway, the steering shaft is listed for coverage under GMPP Majorguard for sure, but I dont get many of the Certified used cars through here so I cant be certain. If you want to know how to fix it yourself for nothing, (temporarily) let me know.