# Service bulletin SSM 54122

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.

- Type: Service bulletin
- NHTSA id: 11021804
- Published by NHTSA: 2025\-08\-12
- Manufacturer's number: SSM 54122
- Manufacturer's date: 2025\-08\-08
- NHTSA component: SUSPENSION

## NHTSA's summary

Some 2024 F\-Super Duty non\-Tremor vehicles equipped with four\-wheel drive \(4WD\) may exhibit a slight rotational grinding noise from the front axle while driving in two\-wheel drive \(2WD\). If the noise does not occur with the vehicle driven in 4WD, this may be due to the non\-selectable right side hublock on the front axle. To correct the condition, replace the right front hublock with a selectable hublock, service part number PC3Z\-3B396\-A. Refer to Workshop Manual, Section 307\-07A. Vacuum lines with service base part numbers 3C125 and/or 3C124 may need to be installed if not present on the vehicle. Refer to the parts catalog. Vacuum line HC3Z\-3C124\-B may need to be ordered if the existing line does not extend to the right side wheel knuckle. Suspension modifications may contribute to the concern. Inspect the vehicle for aftermarket leveling or lift kits as well as aftermarket caster/camber adjusting sleeves. If any vehicle modifications are present, this is not a warrantable repair. Do not submit a claim. Use the "Submit Global Concern Report \(GCR\)" link at the upper right of the OASIS report to submit a

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021804-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021804-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Suspension

## Vehicles listed

- 2024 FORD F\-250 SD
- 2024 FORD F\-350 SD
- 2024 FORD F\-450 SD
- 2024 FORD F\-550 SD

## Other bulletins for the same vehicles and component

- [SSM 54515](/bulletins/11027826.md), 2026-01-27, Other: SUSPENSION; POWER TRAIN. 2023\-2024 F\-Super Duty/F\-53 Motorhome Chassis/F\-59 Commercial Stripped Chassis and 2023\-2025 F\-650/F\-750/E\-Series vehicles equipped with a Dana rear axle and built on or after 01\-Jul\-2022 may have orange/red RTV sealant used as the gasket on the differential housing cover. This does not indicate any previous repairs as it is used by Dana during assembly.

JSON: [/v1/bulletins/11021804](/v1/bulletins/11021804)

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