And I was wondering if there were ramifications to NOT getting the TSB done, in other words does the click/pop mean that some component is wearing and needs that part to mitigate it, or is the only drawback that you hear a click/pop now and then but otherwise it does no harm to leave it alone? The details in the TSB don't go any deeper than just making the fix.
Yes, what else could it be than a 'wearing' sound?
Looking at the TSB pictures makes it clear there is an space created between the hub and the half-shaft's wheel bearing mating surface where none should exist.
What part was engineered or manufactured incorrectly so that the clearance or tolerance needs to be adjusted with a 'shim' to prevent the audible shifting/wear noise in the assembly.
Why is there a cutoff date to the 'fix' when we have cars made after that date with the same noise?
On the other hand, maybe it was like the missing 505 Pkg leather shifter knob and the Hermosillo Plant just didn't put the thrust washer on the half-shaft during assembly.
Maybe they were out of stock that day.
Makes one wonder what the QA folks are doing on the assembly line.
If your car is NOT making the offending noise, it would be interesting to see if it has a thrust washer where the TSB says one should be.
Well, it could be worse - I'm glad my emergency brake is working correctly (knock on wood).