Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash...
Peterbilt technical service bulletin E327 for 2021-2025 Peterbilt 579, 2021-2025 Peterbilt 389 and 2021-2025 Peterbilt 567 and others.
- Bulletin number
- E327 (E327)
- Component
- Electrical system
- Summary
- "Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash STOP lamp incorrectly. PCI-2 software on these chassis must be reverted from NA202 to NA201 (Pack 2 injectors) or from NA206 to NA191 (Pack 1 injectors) to prevent incorrect STOP lamp display.
Owners of these vehicles have filed 7 complaints in the electrical category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Peterbilt 579?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history