Why Is Peterbilt Discontinuing The 389 2024. In honor of peterbilt discontinuing the 389, i’ve made a 389x model to show the legacy that the 389 has made over the years… as far as i know, the 389 is being discontinued by peterbilt,. Then after a 20 year run it was.

Then after a 20 year run it was. I read somewhere last night that the iconic peterbilt 389 will end production sometime in 2023.