High pitch harmonic whine 2020 Ram Big Horn Quad

[SueHarada]

idles fine, 5.7 sounds normal, upon acceleration, I hear this high pitch whine, as it changes gears, I'm guessing the tranny, (gotta be) but no ill effects other than this sound, steady state cruising, like 55-70 mph, wind noise, 5.7 rpm basically masks the whine, what the hell is it? mileage: 38k

 

[vincentw56]

What year? How many miles? Does it have eTorque?

 

[crusher]

it would help to have the details of your truck, however i did had a similar problem on my last ram, turn out to be the water pump pulley, so i changed the water pump assembly.