Service bulletin TechTalk7853
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 | 10183447 |
| Published by NHTSA | 2020-12-02 |
| Manufacturer's number | TechTalk7853 |
| Manufacturer's date | 2020-11-05 |
| NHTSA component | POWER TRAIN; EQUIPMENT |
NHTSA's summary
Tech Talk discussion on GHG17 WST 4900 Neutral Switch Not Valid.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Equipment and accessories, Transmission and driveline
| WESTERN STAR 4900 | 2019 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2020488 | 2020-10-16. Powertrain |
|---|---|
| 20V642000 | 2020-10-16. POWER TRAIN:CLUTCH ASSEMBLY |
| 2018714 | 2018-12-19. Powertrain |
| 18V903000 | 2018-12-19. POWER TRAIN:CLUTCH ASSEMBLY |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| CXA 06_24_Clutch Bolts | 2024-07-09. Other. CX Advocate communication for clutch bolts |
|---|---|
| TSB35-023-WST | 2024-06-05. Service bulletin. Technical Service Bulletin for New Final Drive Over Heat Diagnostic |
| ICI22-017 | 2022-05-03. Service bulletin. 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 | 2022-02-05. Service bulletin. Revised Western Star Service Bulletin for Drive Line Vibration. Minor note: added an update of document previously submitted. The related VMRS codes are added |
| CALWS49-001 | 2021-05-25. Service bulletin. Customer Advisory Letter on ATD Inlet Pipe Bellows Assembly |
| WSTCAE180-2020 | 2021-05-18. Service bulletin. Portland Truck Plant Paint Changes |
| WSTCAE170-2019 | 2021-05-18. Service bulletin. New Valeo A/C Compressor |
| D21M1 | 2021-05-01. Service bulletin. 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. |
| WI21-008 | 2021-04-23. Service bulletin. Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021. |
| DT12 Trans Chafe | 2021-04-08. Service bulletin. 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. |