WenmarOpen by Wenmar Pro

Service bulletin 19TL-12

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10164625
Published by NHTSA2019-09-09
Manufacturer's number19TL-12
Manufacturer's date2019-09-09
NHTSA componentPOWER TRAIN; EQUIPMENT

NHTSA's summary

Tool Letter for New Final Drive Pinion Cover Install Tool

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

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22016 to 2020
FREIGHTLINER CASCADIA2015, 2016, 2017, 2018, 2019, 2020
FREIGHTLINER CORONADO2016, 2017, 2018, 2019
WESTERN STAR 47002016, 2017, 2018, 2019
WESTERN STAR 49002016, 2017, 2018, 2019
WESTERN STAR 57002016, 2017, 2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
22V3380002022-05-16. EQUIPMENT:OTHER:LABELS
20204882020-10-16. Powertrain
20V6420002020-10-16. POWER TRAIN:CLUTCH ASSEMBLY
19V1370002019-02-27. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
20187142018-12-19. Powertrain
18V9030002018-12-19. POWER TRAIN:CLUTCH ASSEMBLY
20176362017-12-18. Accessories
17V8100002017-12-15. EQUIPMENT
20175692017-11-20. Powertrain
17V7300002017-11-17. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB-26-057-FTL2026-06-01. Service bulletin. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
TSB-26-055-FTL2026-02-03. Service bulletin. Revised Technical Service Bulletin for DT12 Excessive Wear
TSB-26-055-FTL2026-02-03. Service bulletin. Technical Service Bulletin for DT12 Excessive Wear
TSB-26-052-FTL2026-02-03. Service bulletin. Technical Service Bulletin for DT12 PTO Upfit
FleetCom_Passive Lube2026-01-08. Other. Fleet Communications for Detroit Axle NFD ALM to Passive Lube Management
FleetCom_Oil Plug Loc2026-01-08. Other. Fleet Communications for NFD Lower Oil Plug Location - SP Axles
FleetCom_NFD Axle2026-01-08. Other. Fleet Communications for Detroit NFD Axle - Factory Fluid Change
TSB26-056-FTL2025-05-02. Service bulletin. Service Solution for DT12 Oil Plug Ports
TSB26-008-WST2025-05-02. Service bulletin. Service Solution for DT12 Oil Plug Ports
TSB26-057-FTL2025-03-04. Service bulletin. DT12 OVX Transmission Refresh