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Service bulletin WP20-001REV

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 id10171359
Published by NHTSA2020-02-15
Manufacturer's numberWP20-001REV
Manufacturer's date2020-02-14
NHTSA componentPOWER TRAIN; LANE DEPARTURE; SUSPENSION; EQUIPMENT

NHTSA's summary

Revision to a Warranty Policy Letter announcing the One Stop Supplier Extended Program Launch. The One Stop Supplier Extended Program streamlines the claim filing process because with One Stop Supplier Extended, the service network will file claims for some supplier-supported coverages in OWL. Revisions are in blue.

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

Driver assistance, Equipment and accessories, Suspension, Transmission and driveline

Vehicles listed
FCCC MT452020
FCCC MT552020
FCCC S2C2020
FCCC S2G2020
FCCC S2RV2020
FCCC XBP2020
FCCC XCM2020
FCCC XCR2020
FREIGHTLINER 108SD2020
FREIGHTLINER 114SD2020
FREIGHTLINER BUSINESS CLASS M22020
FREIGHTLINER CASCADIA2020
FREIGHTLINER CORONADO2020
THOMAS BUILT BUSES MINOTOUR2020 to 2021
THOMAS BUILT BUSES SAF-T-LINER C22020 to 2021
THOMAS BUILT BUSES SAF-T-LINER EFX2020 to 2021
THOMAS BUILT BUSES SAF-T-LINER HDX2020 to 2021
WESTERN STAR 47002020
WESTERN STAR 48002020, 2021
WESTERN STAR 49002020, 2021
WESTERN STAR 57002020
WESTERN STAR 69002020, 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
26V5830002026-09-09. ELECTRONIC STABILITY CONTROL (ESC); SERVICE BRAKES, AIR:ANTILOCK
25V7600002025-11-04. SUSPENSION:CRITICAL FASTENERS
23V2990002023-04-26. ELECTRONIC STABILITY CONTROL (ESC)
23V0730002023-02-10. ELECTRONIC STABILITY CONTROL (ESC); SERVICE BRAKES, AIR:ANTILOCK:MODULATOR
22V8170002022-11-01. SERVICE BRAKES, AIR:ANTILOCK:MODULATOR; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
22V3380002022-05-16. EQUIPMENT:OTHER:LABELS
20V6600002020-10-27. SUSPENSION:REAR:AXLE:SPINDLE
20V6340002020-10-14. EQUIPMENT:OTHER:LABELS; TIRES
20V5390002020-09-03. SUSPENSION:MULTIPLE AXLE
20V2110002020-04-10. EQUIPMENT:OTHER:LABELS

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
TEM-11-000012026-08-03. Other. Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
TSB-26-057-FTL2026-06-01. Service bulletin. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
CXA 04_26_Side Guard2026-05-02. Other. CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality (TSB-54-381-FTL)
TSB-32-020-WST2026-03-27. Service bulletin. Technical Service Bulletin for TufTrac M12 Bolts
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