# Service bulletin SS701\-WST2021

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.

- Type: Service bulletin
- NHTSA id: 10191148
- Published by NHTSA: 2021\-05\-01
- Manufacturer's number: SS701\-WST2021
- Manufacturer's date: 2021\-04\-29
- NHTSA component: POWER TRAIN

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191148-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191148-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2012 to 2022 WESTERN STAR 4700
- 2015 to 2022 WESTERN STAR 5700

## Recalls for the same vehicles and component

- [21V209000](/recalls/nhtsa/21V209000.md), 2021-03-24: POWER TRAIN:CLUTCH ASSEMBLY
- [2020488](/recalls/tc/2020488.md), 2020-10-16: Powertrain
- [20V642000](/recalls/nhtsa/20V642000.md), 2020-10-16: POWER TRAIN:CLUTCH ASSEMBLY
- [2018714](/recalls/tc/2018714.md), 2018-12-19: Powertrain
- [18V903000](/recalls/nhtsa/18V903000.md), 2018-12-19: POWER TRAIN:CLUTCH ASSEMBLY
- [17V315000](/recalls/nhtsa/17V315000.md), 2017-05-11: POWER TRAIN:AXLE ASSEMBLY
- [16V634000](/recalls/nhtsa/16V634000.md), 2016-08-31: POWER TRAIN:AXLE HUBS
- [15V617000](/recalls/nhtsa/15V617000.md), 2015-10-01: POWER TRAIN:MANUAL TRANSMISSION

## Other bulletins for the same vehicles and component

- [CXA\_10\_25\_Tech Questions](/bulletins/11024966.md), 2025-11-05, Other: ELECTRICAL SYSTEM; POWER TRAIN. CX Advocate for technical questions/issues raised
- [CXA\_9\_25\_Tech Questions](/bulletins/11023683.md), 2025-10-03, Other: POWER TRAIN; ENGINE. CX Advocate for technical questions/issues raised
- [CXA\_8\_25\_Tech Questions](/bulletins/11022341.md), 2025-09-02, Other: POWER TRAIN; ENGINE; UNKNOWN OR OTHER. CX Advocate for technical questions/issues raised
- [TSB26\-008\-WST](/bulletins/11017553.md), 2025-05-02, Service bulletin: POWER TRAIN. Service Solution for DT12 Oil Plug Ports
- [CXA 06\_24\_Clutch Bolts](/bulletins/11003924.md), 2024-07-09, Other: POWER TRAIN. CX Advocate communication for clutch bolts
- [TSB35\-023\-WST](/bulletins/11000978.md), 2024-06-05, Service bulletin: POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic
- [SF658](/bulletins/10233854.md), 2023-04-07, Service bulletin: POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM. Field Service Campaign for Integrated Predictive Powertrain Control ECU. Resubmitting to fix a table formatting issue.
- [SS3097\-FTL2022](/bulletins/10210559.md), 2022-05-03, 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\-017](/bulletins/10210548.md), 2022-05-03, 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.
- [SBW41\-002](/bulletins/10207507.md), 2022-02-05, Service bulletin: POWER TRAIN. Revised Western Star Service Bulletin for Drive Line Vibration. Minor note: added an update of document previously submitted. The related VMRS codes are added

JSON: [/v1/bulletins/10191148](/v1/bulletins/10191148)

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