Check a VIN

April 19, 2021 Service bulletin

Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal

Freightliner technical service bulletin D21M1 for 2012-2022 Freightliner Cascadia, 2012-2022 Western Star 4900 and 2015-2022 Western Star 5700 and others.

Bulletin number
D21M1
Component
Power train
Summary
Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal. Daimler Trucks North America LLC, on behalf of its DETROIT Powertrain Division, is initiating Field Service Campaign D21M1 on certain DT12 transmissions in order to reseal the bypass plugs of the drive shaft cover located in front housing.

Owners of these vehicles have filed 2 complaints in the transmission category.

Vehicles covered

VIN decoder

See the problems and recalls for an exact car

Buying a used Freightliner Cascadia?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history