I have the same issue with my ‘49 3100. I have checked everything except the front shocks.
I was leaning over the left fender for some reason and heard a squeaking sound from my weight on the fender. The shocks only have 7,000 miles on them, but they ain’t supposed to squeak.
My next adventure will be removing the shock to see if the squeak goes away, and replace it if does and road test it. I will report back with my findings.
Along that line, are there any better shocks out there for our trucks? Like a quality gas-charged shock?
Also, I put Teflon liners in my front springs, and so far, they are quiet and very compliant…could it be your springs squeaking? I guess you’ll find out when you pull the shocks. I had my kingpins done for me, but hey didn’t do a very good job- one side has some play, so I’ll be rebuilding that side when it gets warmer outside.
