I have noticed over the past 2-3 weeks an increased high pitched, pulsed squeal coming from the front axle region. This seems to occur primarily with speeds 35mph and greater and with acceleration. No shake or other problems. When rolling to a stop there is no noise. I have a 99.5 CC 3/4 ton with 101K miles. Mods are 4 inch down pipe from turbo back and Superchip tuner, no lift, original tire size. Any thoughts on where this sound may be originating?

 

Does it sound like the "pulsed" squeal is in time with the tires rotation? Might be in need of some lube... hub bearings. Just my input, but I don't get paid to be a mechanic. I could be wrong. Just thought I'd give it a shot. Good luck to you and yours.

 

Check the belt & idler pulley.

 

I ran into this problem with son truck= it was the shield on the brake rotors was bent and rubbing on the rotor on the frount. i just unbent it = the problem was cured.

 

sometimes the shild is bent just enough so that the wind bends it just a little more and it squeels, then when you slow down the wind not their and the shield don't rub on rotor.