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June 3, 2022 Service bulletin

Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide

Mack technical service bulletin KC-2158 for 2016-2023 Mack Anthem (An), 2018-2023 Mack Granite (GR) and 2010-2011 Mack CXU612 and others.

Bulletin number
KC-2158
Component
Engine and engine cooling
Summary
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.

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

Vehicles covered

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