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August 23, 2021 Service bulletin

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

Freightliner technical service bulletin D21M6 for 2021 Freightliner Cascadia.

Bulletin number
D21M6
Component
Engine and engine cooling
Summary
Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits. Certain Customer Demo Unit (CDU) and Pre-Series vehicles with Gen 5 engines require engine retrofits to bring the engines up to full production specifications.

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

Vehicles covered

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