Why Is Peterbilt Discontinuing The 389 2024. The model 389 r eplaced 379 in 2006 with redesigned. There are rumours that peterbilt is going to discontinue the model 389.

The biggest change in the line comes in the form of the new 389, which will replace the companys flagship classically designed and legendary 379. There are rumours that peterbilt is going to discontinue the model 389.