WenmarOpen by Wenmar Pro

Service bulletin 24KWC/24PBC

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 id11036296
Published by NHTSA2026-08-20
Manufacturer's number24KWC/24PBC
Manufacturer's date2026-08-13
NHTSA componentSTEERING

NHTSA's summary

Updated Sheppard Steering Gear Classification Tool link in Inspection Procedure

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

Steering

Vehicles listed
KENWORTH L7702025, 2026
KENWORTH T2802025, 2026
KENWORTH T3802025, 2026
KENWORTH T4802025, 2026
KENWORTH T6802025, 2026
KENWORTH T8802025, 2026
KENWORTH W9902025, 2026
PETERBILT 3892025
PETERBILT 5202025, 2026
PETERBILT 5352025
PETERBILT 5362025, 2026
PETERBILT 5372025, 2026
PETERBILT 5482025, 2026
PETERBILT 5672025, 2026
PETERBILT 5792025, 2026
PETERBILT 5892025, 2026

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

Recalls for the same vehicles and component
20260142026-01-19. Steering
26V0220002026-01-19. STEERING
20247322024-12-03. Steering
24V9080002024-12-03. STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM; STEERING:LINKAGES:TIE ROD ASSEMBLY
20243352024-06-12. Steering
24V4330002024-06-12. STEERING:LINKAGES:TIE ROD ASSEMBLY; STEERING:LINKAGES:DRAG:LINK:CONNECTION
20241972024-03-27. Steering
24V2330002024-03-27. STEERING:GEAR BOX:SHAFT SECTOR
20240362024-01-25. Steering
24V0440002024-01-25. STEERING

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
26PACA2026-06-03. Service bulletin. Updated cross shaft and bearing installation steps have been added to the repair procedures.
46-0282026-06-03. Service campaign. Certain Peterbilt Model 520 BEV chassis with an Accelera Power Control and Accessory System (PCAS) were manufactured without a check valve in the power steering system.
24KWF/PBF2026-04-07. Service bulletin. Sheppard Recall Update March 2026 - The Parts section has been updated with revised steps for opening a TCS365 Order Support – Order Inquiry case.
24KWC/PBC2026-04-07. Service bulletin. Sheppard Recall Update March 2026 - The Parts section has been updated with revised steps for opening a TCS365 Order Support – Order Inquiry case.
15-0342026-03-05. Service campaign. Battery Electric Vehicle (BEV) de-energizing and re-energizing procedures have been added to the bulletin for Peterbilt Model 520 BEV.
26PACA2026-02-18. Service campaign. KW: Certain Kenworth L770 chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in increased stress on the steering cross shaft on the Right-Hand Stand-Up (RHSU) controls configuration. Failure of the RH steering cross shaft could result in the loss of RH steering control which may increase the risk of a crash. PB: Certain Peterbilt Model 520 / 520 BEV chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in increased stress on the steering cross shaft on the Right-Hand Stand-Up (RHSU) controls configuration. Failure of the RH steering cross shaft could result in the loss of RH steering control which may increase the risk of a crash.
15-0342026-01-06. Service bulletin. Certain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel.
24PBK2025-02-05. Service bulletin. Safety Recall Specific 2024 Peterbilt Model 367, 389, 548, and 2024-2025 520 and 567 chassis equipped with a PACCAR 20k Steer Axle have been identified as having steering arm and/or tie rod arm fasteners that may be improperly torqued and can be at risk of failing. If both fasteners in either steering arm or tie rod arm fail, there may be a loss of steering control, which could increase the risk of a crash. Affected chassis will have all steering arm and tie rod arm bolts removed, replaced with new bolts, and torqued properly.
24KWK2025-02-05. Service bulletin. Safety Recall Parts and procedures are now available. Certain Kenworth model T480, T800, T880, and W990 equipped with a PACCAR 20k Steer Axle have been identified as having steering arm and/or tie rod arm fasteners that may be improperly torqued and can be at risk of failing. If either steering arm or tie rod arm fasteners fail, there may be a loss of steering control, which could increase the risk of a crash. Affected chassis will have all steering arm and tie rod arm bolts removed, replaced with new bolts, and torqued properly.
24PBK2025-01-07. Service bulletin. Interim Safety Recall Specific 2024 Peterbilt model 367, 389, 548, and 2024-2025 Peterbilt 520 and 567 chassis equipped with a PACCAR 20k Steer Axle have been identified as having steer arm and/or tie rod arm fasteners that may be improperly torqued and can be at risk of failing. If both fasteners in either steering arm or tie rod arm fail, there may be a loss of steering control, which could increase the risk of a crash. At this time, parts are not available to complete the necessary repairs. This bulletin will be updated when parts become available.