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September 25, 2018 Service bulletin

Mack Chassis

Mack technical service bulletin K91121166 for 2018-2019 Mack Anthem (An), 2019 Mack Granite (GR) and 2018 Mack Gu and others.

Bulletin number
K91121166
Component
Engine
Summary
Mack Chassis - Automated Manual Transmission Model F (AMT-F, mDrive) - Possible Infrequent Hiccup/Stumble During Steady Engine/Vehicle Speed; Diagnostic Trouble Code P1074-92 Logging, Appears As Inactive - Common Model Years 2018 And 2019

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