Peterbilt 389 Discontinued 2024 Model. Peterbilt motors company announced last week it is retiring its model 389. The model 389 replaced 379 in 2006 with redesigned headlamps fenders and trim, and the 379 itself replaced the venerable 359 in the late 1980s.

If you order today you will get your new shiny truck in second quarter of 2023. The 389x celebrates the iconic status of the model 389 with a new, distinctive special edition.