# Service bulletin WI21\-004

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: 10187900
- Published by NHTSA: 2021\-03\-02
- Manufacturer's number: WI21\-004
- Manufacturer's date: 2021\-02\-01
- NHTSA component: POWER TRAIN; ENGINE AND ENGINE COOLING

## NHTSA's summary

Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters. Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187900-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187900-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2016 to 2021 FCCC XBP
- 2016 to 2021 FCCC XCR
- 2016 to 2021 FREIGHTLINER 108SD
- 2016 to 2021 FREIGHTLINER 114SD
- 2016 to 2021 FREIGHTLINER 122SD
- 2016 to 2021 FREIGHTLINER BUSINESS CLASS M2
- 2016 to 2021 FREIGHTLINER CASCADIA
- 2019 to 2021 FREIGHTLINER ECONIC SD
- 2016 to 2021 THOMAS BUILT BUSES SAF\-T\-LINER C2
- 2016 to 2021 WESTERN STAR 4700
- 2016 to 2021 WESTERN STAR 4900
- 2021 WESTERN STAR 49X
- 2016 to 2021 WESTERN STAR 5700
- 2016 to 2021 WESTERN STAR 6900

## Recalls for the same vehicles and component

- [2021174](/recalls/tc/2021174.md), 2021-03-24: Powertrain
- [21V209000](/recalls/nhtsa/21V209000.md), 2021-03-24: POWER TRAIN:CLUTCH ASSEMBLY
- [21V073000](/recalls/nhtsa/21V073000.md), 2021-02-12: ENGINE
- [20V742000](/recalls/nhtsa/20V742000.md), 2020-11-30: 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
- [2020408](/recalls/tc/2020408.md), 2020-09-01: Engine
- [20V527000](/recalls/nhtsa/20V527000.md), 2020-09-01: ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING
- [20V176000](/recalls/nhtsa/20V176000.md), 2020-03-23: POWER TRAIN:AXLE ASSEMBLY
- [19V443000](/recalls/nhtsa/19V443000.md), 2019-06-11: POWER TRAIN:AXLE ASSEMBLY

## Other bulletins for the same vehicles and component

- [TSB\-42\-080\-FTL](/bulletins/11035527.md), 2026-08-03, Service bulletin: POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Updated frequently asked questions.
- [TSB\-26\-057\-FTL](/bulletins/11033103.md), 2026-06-01, Service bulletin: POWER TRAIN. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
- [ICI26\-006](/bulletins/11031973.md), 2026-05-02, Other: POWER TRAIN. Important Campaign Information for SF706 \- Revised, Reactivated
- [SF706\-DLR LTR](/bulletins/11031972.md), 2026-05-02, Service bulletin: POWER TRAIN. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [SF706\-Bulletin](/bulletins/11031971.md), 2026-05-02, Service bulletin: POWER TRAIN. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [CXA 03\_26\_Surge Tank](/bulletins/11030507.md), 2026-04-02, Other: ENGINE. CX Advocate for discolored coolant surge tanks \(24CSA\-20\)
- [ICI26\-003](/bulletins/11030493.md), 2026-04-02, Other: POWER TRAIN. Important Campaign Information letter for SF706 \- campaign suspended
- [FleetCom\_SF706](/bulletins/11029522.md), 2026-03-04, Other: POWER TRAIN. Fleet Communications for SF706 \- Cascadia axle conversion
- [SF706\-OWN LTR](/bulletins/11029516.md), 2026-03-04, Service campaign: POWER TRAIN. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)
- [SF706\-DLR LTR](/bulletins/11029515.md), 2026-03-04, Service campaign: POWER TRAIN. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem \(AT\) 6x4 to New Final Drive \(NFD\)

JSON: [/v1/bulletins/10187900](/v1/bulletins/10187900)

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