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April 6, 2021 Service bulletin

Detroit Emission Recall for GHG14 DETROIT DD13 with Two-Box Aftertreatment Software Reprogramming

Freightliner technical service bulletin D21R1 for 2014 Freightliner Cascadia, 2013-2015 Freightliner Business Class M2 and 2015 Western Star 4900 and others.

Bulletin number
D21R1
Component
Engine and engine cooling
Summary
Detroit Emission Recall for GHG14 DETROIT DD13 with Two-Box Aftertreatment Software Reprogramming. Certain Detroit Model Year 2013 to 2015 GHG14 DD13 engines that are registered in the state of California will require reprogramming to a minimum of the MCM and ACM software versions.

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

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