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March 31, 2023 Service bulletin

Revised Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits

Freightliner technical service bulletin D21M6REV4 for 2021 Freightliner Cascadia.

Bulletin number
D21M6REV4
Component
Engine and engine cooling
Summary
Revised Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits. D21M6 REVISION : Page 1 of the bulletin under "Replacement Parts" and "IMPORTANT" have been revised.

Owners of these vehicles have filed 1 complaints in the engine category.

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