# NHTSA recall 21V648000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 21V648000
- Manufacturer's number: 21PBJ
- Manufacturer: PACCAR Incorporated
- Reported: 2021\-08\-19
- Owners notified: 2022\-03\-11
- Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
- Units potentially affected: 163
- Part numbers: G90\-6214\*

## What is wrong

PACCAR, Inc. \(PACCAR\) is recalling certain 2021\-2022 Peterbilt 367, 389, 567, and 579 vehicles.  The cross member mounted Hill Start Assist valve assembly may have insufficient clearance to the rear axle, causing damage to the rear brake hose and loss of the rear brake signal.


## What can happen

If loss of the rear brake signal occurs, the vehicle could experience reduced rear braking capability or loss of brakes to the rear axle\(s\), increasing the risk of a crash.


## The remedy

Dealers will inspect for clearance and re\-work the assembly to conform with an updated design, free of charge.  Interim owner notification letters were mailed on September 24, 2021.  Owner notification letters were mailed on March 11, 2022.  Owners may contact PACCAR's customer service at 1\-940\-591\-4220 \(Peterbilt\).  PACCAR's number for this recall is 21PBJ.


## Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1\-888\-327\-4236 \(TTY 1\-800\-424\-9153\), or go to www.nhtsa.gov.


## Remedy progress the manufacturer reported

- Report: Annual report 2, for 2025 quarter 1 to 2025 quarter 4
- Filed with NHTSA: 2026\-01\-22
- Vehicles in the campaign: 163
- Reported remedied: 141 \(86%\)
- Reported unreachable: 4
- Reported removed: 0

These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 4, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2021 PETERBILT 367](/makes/peterbilt/367/2021/recalls.md)
- [2022 PETERBILT 367](/makes/peterbilt/367/2022/recalls.md)
- [2021 PETERBILT 389](/makes/peterbilt/389/2021/recalls.md)
- [2022 PETERBILT 389](/makes/peterbilt/389/2022/recalls.md)
- [2021 PETERBILT 567](/makes/peterbilt/567/2021/recalls.md)
- [2022 PETERBILT 567](/makes/peterbilt/567/2022/recalls.md)
- [2021 PETERBILT 579](/makes/peterbilt/579/2021/recalls.md)
- [2022 PETERBILT 579](/makes/peterbilt/579/2022/recalls.md)

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/21V648000](/v1/recalls/nhtsa/21V648000)

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