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Service bulletins for the 2022 Western Star 5700

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

61 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
CXA_10_25_Tech Questions2025-11-05. Other. ELECTRICAL SYSTEM; POWER TRAIN. CX Advocate for technical questions/issues raised
CXA_9_25_Tech Questions2025-10-03. Other. POWER TRAIN; ENGINE. CX Advocate for technical questions/issues raised
CXA_8_25_Tech Questions2025-09-02. Other. POWER TRAIN; ENGINE; UNKNOWN OR OTHER. CX Advocate for technical questions/issues raised
TSB26-008-WST2025-05-02. Service bulletin. POWER TRAIN. Service Solution for DT12 Oil Plug Ports
CXA 06_24_Clutch Bolts2024-07-09. Other. POWER TRAIN. CX Advocate communication for clutch bolts
TSB35-023-WST2024-06-05. Service bulletin. POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic
SF6582023-04-07. Service bulletin. POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM. Field Service Campaign for Integrated Predictive Powertrain Control ECU. Resubmitting to fix a table formatting issue.
SS3097-FTL20222022-05-03. Service bulletin. POWER TRAIN. Service Solution for ShipShort Intelligent Powertrain Management (IPM). Due to electronic control supply shortages, vehicles shipped without the Intelligent Powertrain Predictive Cruise (IPPC) module. The purpose of the IPPC module is to improve fuel efficiency when the Predictive Cruise Control feature is enabled. Not having the IPM does not affect othercruise control functions, such as Adaptive Cruise Control or standard cruise control.
ICI22-0172022-05-03. Service bulletin. POWER TRAIN. Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to July 1, 2022.
SS701-WST20212021-05-01. Service bulletin. POWER TRAIN. Service Solution for DT12 Harness Chaffing - PT Can Faults. Transmission will not shift into Gear while driving or will not start and trigger multiple PT CAN Fault Codes.
D21M12021-05-01. Service bulletin. POWER TRAIN. 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.
DT12 Trans Chafe2021-04-08. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and contacting the transmission TCU case. To reduce potential chafing areas, the proposed short-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.