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Service bulletin SB54-328

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 id10177000
Published by NHTSA2020-07-02
Manufacturer's numberSB54-328
Manufacturer's date2020-06-29
NHTSA componentPOWER TRAIN

NHTSA's summary

Freightliner Service Bulletin for Rerouting Wiring Harness to Reduce Chafing. Allison transmission wiring harness chafing causes disruption to gear engagement and fault code generation. To reduce chafing, the wiring is routed using stand off brackets and tie straps to minimize contact with the transmission parts. This bulletin applies to vehicles equipped with on-board diagnostics (OBDs) manufactured after 2016.

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

Transmission and driveline

Vehicles listed
FREIGHTLINER 108SD2017, 2018, 2019, 2020, 2021
FREIGHTLINER 114SD2017, 2018, 2019, 2020, 2021
FREIGHTLINER BUSINESS CLASS M22017 to 2021

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

Recalls for the same vehicles and component
20204882020-10-16. Powertrain
20V6420002020-10-16. POWER TRAIN:CLUTCH ASSEMBLY
20V1760002020-03-23. POWER TRAIN:AXLE ASSEMBLY
19V4430002019-06-11. POWER TRAIN:AXLE ASSEMBLY
20187142018-12-19. Powertrain
18V9030002018-12-19. POWER TRAIN:CLUTCH ASSEMBLY
16V6340002016-08-31. POWER TRAIN:AXLE HUBS

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
CXA_01_26_Trans Support2026-02-03. Other. CX Advocate for Aftermarket Transmission Support
FleetCom_Oil Plug Loc2026-01-08. Other. Fleet Communications for NFD Lower Oil Plug Location - SP Axles
TSB35-039-FTL2025-01-03. Service bulletin. Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management
TSB35-039-FTL2024-12-06. Service bulletin. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management.
CXA 11_21_M2, SD Transfer2024-12-04. Other. CX Advocate for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed (SS 3155-FTL)
SS3155-FTL2024-11-06. Other. Service Solution for M2 and SD Vehicles Transfer Case Failures Due to Excessive Vehicle Speed
CXA 9_24_NFD fill plug2024-10-04. Other. CX Advocate for NFD fill plugs
TSB35-039-FTL2024-09-07. Service bulletin. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management. Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.
TSB35-039-FTL2024-08-02. Service bulletin. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management. Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.
CXA 06_24_Clutch Bolts2024-07-09. Other. CX Advocate communication for clutch bolts