# NHTSA recall 23V661000

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: 23V661000
- Manufacturer's number: 23KWJ, 23PBJ
- Manufacturer: PACCAR Incorporated
- Reported: 2023\-09\-29
- Owners notified: 2024\-01\-15
- Component: SERVICE BRAKES, AIR
- Units potentially affected: 254
- Part numbers: G90\-1287\-004, G90\-1287\-005, G90\-1287\-006

## What is wrong

PACCAR Incorporated \(PACCAR\) is recalling certain 2021\-2024 Kenworth T280, T380, 2020\-2024 Peterbilt 548, 536, 2024 Peterbilt 537, and 2020\-2024 Kenworth T480 trucks.  The timing of the trailer brake release may be delayed.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."


## What can happen

A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.


## The remedy

Dealers will replace the fittings and hoses in the affected valves, free of charge.  Owner letters were mailed January 15, 2024.  Owners may contact Kenworth's customer service at 1\-425\-828\-5888 and Peterbilt's customer service at 1\-940\-591\-4220.  PACCAR's numbers for this recall are 23KWJ and 23PBJ.


## 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: Quarterly report 8, for 2025 quarter 4
- Filed with NHTSA: 2026\-01\-23
- Vehicles in the campaign: 254
- Reported remedied: 167 \(65%\)
- Reported unreachable: 2
- 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 KENWORTH T280
- [2022 KENWORTH T280](/makes/kenworth/t280/2022/recalls.md)
- [2023 KENWORTH T280](/makes/kenworth/t280/2023/recalls.md)
- [2024 KENWORTH T280](/makes/kenworth/t280/2024/recalls.md)
- 2021 KENWORTH T380
- [2022 KENWORTH T380](/makes/kenworth/t380/2022/recalls.md)
- [2023 KENWORTH T380](/makes/kenworth/t380/2023/recalls.md)
- [2024 KENWORTH T380](/makes/kenworth/t380/2024/recalls.md)
- 2020 KENWORTH T480
- 2021 KENWORTH T480
- [2022 KENWORTH T480](/makes/kenworth/t480/2022/recalls.md)
- [2023 KENWORTH T480](/makes/kenworth/t480/2023/recalls.md)
- [2024 KENWORTH T480](/makes/kenworth/t480/2024/recalls.md)
- 2020 PETERBILT 536
- 2021 PETERBILT 536
- [2022 PETERBILT 536](/makes/peterbilt/536/2022/recalls.md)
- [2023 PETERBILT 536](/makes/peterbilt/536/2023/recalls.md)
- [2024 PETERBILT 536](/makes/peterbilt/536/2024/recalls.md)
- [2024 PETERBILT 537](/makes/peterbilt/537/2024/recalls.md)
- 2020 PETERBILT 548
- 2021 PETERBILT 548
- 2022 PETERBILT 548
- 2023 PETERBILT 548
- [2024 PETERBILT 548](/makes/peterbilt/548/2024/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [24KWE/24PBE](/bulletins/11027065.md), 2026-01-06, Emissions
- [24KWD](/bulletins/11024956.md), 2025-11-05, Service bulletin
- [25PBE](/bulletins/11022492.md), 2025-09-03, Service campaign
- [13\-065](/bulletins/11009863.md), 2024-11-05, Service bulletin
- [23KWJ](/bulletins/10248329.md), 2024-01-05, Service bulletin
- [23PBJ](/bulletins/10248328.md), 2024-01-05, Service bulletin
- [23KWJ](/bulletins/10244484.md), 2023-11-10, Service bulletin
- [23PBJ](/bulletins/10244482.md), 2023-11-10, Service bulletin
- [23PBB](/bulletins/10237151.md), 2023-06-03, Service bulletin
- [23KWB](/bulletins/10237150.md), 2023-06-03, Service bulletin

## 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/23V661000](/v1/recalls/nhtsa/23V661000)

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