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July 25, 2026 Service bulletin

105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable...

Peterbilt technical service bulletin E311 for 2017-2020 Peterbilt 579, 2017-2020 Peterbilt 389 and 2017-2020 Peterbilt 567 and others.

Bulletin number
E311
Component
Engine
Summary
105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. Total chassis population is 732.

Owners of these vehicles have filed 4 complaints in the engine category.

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