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July 10, 2026 Service bulletin

The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to...

Kenworth technical service bulletin E311 for 2017-2020 Kenworth T680, 2017-2020 Peterbilt 579 and 2017-2020 Kenworth T800 and others.

Bulletin number
E311
Component
Engine
Summary
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.

Owners of these vehicles have filed 7 complaints in the engine category.

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