Took my '03 Sierra into the dealer a while back and asked them to check out
a clunking sound I could feel in the steering wheel when turning. They said
it was a known problem with the steering linkage (or something) and they
would have to order a part and that they would contact me when it came in.
Last week, I get a post card saying that my part was in and to call to make
I call the guy and he isn't sure what I'm calling about but makes an
appointment. I bring it in and within a 1/2 hour they are done and the
ticket says that they no longer replace the intermediate steering shaft but
rather they just lube it per bulletin no. 1558063 E7700. I asked WTF and he
explained that GM doesn't allow them to replace the shaft anymore because it
doesn't really fix the problem. Rather, they take it apart and use a new
lube and it fixes it.
I haven't had time to check the bulletin yet but was wondering what others
are experiencing with this.