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February 1, 2026 Service campaign

Sc

Mack technical service bulletin S4342 022026 for 2024-2025 Mack Anthem (An), 2024-2025 Mack Granite (GR) and 2024-2025 Mack LR and others.

Bulletin number
S4342 022026
Component
Fuel/propulsion system
Summary
SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.

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

Vehicles covered

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