well, got a few minutes to pull the front wheels....it's the brake pad wear indicator on the left wheel...so it looks like brake pads are in my future.
The wheelbearings seem tight and have plenty of grease, so they must have been repacked before I bought the truck in March.
Since I will be doing pads, i might as well get the rotors turned, and at that point I will repack the wheelbearings again to keep the service interval.
Also, I noticed my upper balljoint on the left side is riveted not bolted, so it must be the original?? Might have balljoints in my future too...
...and, the service manual is in the mail
Thanks guys