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Service bulletin 18TL17 DDE W7155

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 id10151634
Published by NHTSA2018-12-10
Manufacturer's number18TL17 DDE W7155
Manufacturer's date2018-10-31
NHTSA componentEQUIPMENT

NHTSA's summary

DDE W715589050700 - Pin Drive Wrench

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

Vehicles listed
FREIGHTLINER CASCADIA2015
WESTERN STAR 57002015, 2016, 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
20176362017-12-18. Accessories
17V8100002017-12-15. EQUIPMENT
17V4520002017-07-17. EQUIPMENT
16V1430002016-03-09. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:ELECTRICAL
15V1820002015-03-27. EQUIPMENT
20151332015-03-25. Accessories
14V5880002014-09-23. EQUIPMENT:ELECTRICAL

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
WSTCAE176-20202021-05-18. Service bulletin. Removable Front Tow Hook Changes
WSTCAE170-20192021-05-18. Service bulletin. New Valeo A/C Compressor
TSN 32-092021-05-13. Service bulletin. TSN for all Cascadia vehicles equipped with an Airliner rear suspension and the HD 6-piece bolted style forward suspension crossmember - Cascadia vehicles equipped with an Airliner rear suspension and the HD 6-piece bolted style forward suspension crossmember.
TSN 184842021-05-13. Service bulletin. Technical Service Note on Intermittent loss of power steering assist, LH turn only for Cascadia. Only intended for customers wishing to add a power steering oil cooler. For replacement of the gear reference TSN 46-01
TSN 31-112021-05-13. Service bulletin. TSN for all Cascadia vehicles equipped with a driveline center bearing midship support. Reference the following illustration - Customer complaints of loose fasteners at the bracket to channel bolted connection.
FTLCAE139-20132021-05-12. Service bulletin. INTERIOR STORAGE - Side Storage Bins Removed from Certain Cascadia Sleepers. SEAT BELTS - Height Adjustment Removed from Cascadia Passenger Side Seat Belt. FUEL TANKS - Fuel Tank Changes for 25" and 23" Tanks for Model Year 2015. TRANSMISSION - Correction to Allison 5th Gen Module 84L Definition Example. ADMINISTRATION - Model Year 2015 Changeover Date Established. APPENDIX A - 25" and 23" Diameter Cylindrical Fuel Tank Changes. APPENDIX B - Revised Allison 5th Gen New Modules and Definitions
WI21-0082021-04-23. 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 Chafe2021-04-08. 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.
SB83-1552021-03-26. Service bulletin. Updated Freightliner Service Bulletin for Espar Service Information. This bulletin replaces the version dated January 1, 2015. New Cascadia has been added to the model list.
WP60-1002021-03-25. Service bulletin. Updated Western Star Parts Technical Bulletin for Universal Design Floor Mats. This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals.