I have a 1999 Dodge RAM 1500 with about 70k miles on it, 4WD.
Recently it started making strange noise. The most typical way to make the noise is to start braking from higher speed and slow down to about
20-30 MPH.It is hard to say where the noise comes from. It also appears if I just coast at that speed range. Sometimes there is more of it, and sometimes less.
The noise frequency is proportional to speed, if I slow down, the frequency goes down also. It is rare to appear below 20 MPH.
I will be happy to do more experimenting and report my findings if necessary, I am worried about it.
i