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December 19, 2023 Service bulletin

Detroit recently released an ACM software update v7.61.2.0 to address high occurrences of Selective...

Pierce technical service bulletin SB_654 for 2016-2022 Pierce Arrow XT, 2016-2020 Pierce Dash and 2016-2022 Pierce Impel and others.

Bulletin number
SB_654
Component
Engine and engine cooling: exhaust system: emission control: catalytic convertor
Summary
Detroit recently released an ACM software update v7.61.2.0 to address high occurrences of Selective Catalyst Reduction Closed Loop Control at Maximum Limit faults on Pierce apparatus with MY2016 – 2022 Detroit engines. The updated software includes improvements for three fault codes.

Owners of these vehicles have filed 3 complaints in the engine category.

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