Jeff F.

My 2024 6.6 gas has a squealing/chirping issue as well. My truck has been in the shop 5 times for this issue. Currently in the shop now. The dealer says they can hear the noise but can’t pin point it. They have been guessing with no luck, changed the idler pulley, tensioner, and drive belt with no resolution. I personally think it’s the transmission making this noise. It has a slow reaction time when changing gears around 50 mph and had a clicking but only once. I was pulling off and heard a clicking, let off gas clicking stopped, mashed gas again and hear the clicking again. I let off gas and it stops. Mash gas again and no issue. That was a one time thing. Could that squealing or chirping be transmission related? I do have the Allison transmission. I also seem to have a “shudder” at lower speeds when accelerating.