14hemiexpress
Senior Member
Alright guys just thought I would get some insite I just picked up a 2010 ram 1500 2we it has148k on the clock. Yesterday I was cruising a 2 lane highway and herd a howling. It starts in real light at 52mph and ramps up at 55 is the loudest and tapers back off at 58. I'm thinking rear diff because when you let off the gas it it goes away. I can hold stedy at 55 and down shift it and it the same pitch doesn't go away. But left off the pedal and it goes away press it and it comes right back. It truefully sounds like it's coming from the front but I'm sure it's ecoing around in the cab.