I just installed Dorman 425-176 on my 2006 Tahoe (purchased via Amazon). Rattle in steering now gone. I recommend removing the rubber boot (3 nuts) and the foot throttle asm. inside to get better access to the nuts and bolts. I don't think you can get the existing shaft out without removing the rubber boot assembly. Also - on the Dorman 425-176 a small Allen head bolt was holding the sliding mechanism (I think this is for shipping) - I took that out in order to install the new shaft. I'm happy so far - drove about 30 miles today and didn't hear or feel any rattling. I also jacked the whole front of the car up so I could move the bolts to a position to get the 37 foot-pounds applied by my 1/2" torque wrench.