Recall 26V442000: 2027 Kenworth T680, 2026–2027 Peterbilt 579
Updated from NHTSA data · How we count
- Report date
- Jul 8, 2026
- Vehicles affected
- 8
- Models
- 2
- Initiated by
- Manufacturer
The problem
PACCAR Incorporated (PACCAR) is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
The risk
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
The fix
Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.
Affected vehicles
- 2027 Kenworth T680
- 2026 Peterbilt 579
- 2027 Peterbilt 579
Details
- NHTSA campaign
- 26V442000
- Manufacturer campaign
- 26PACC
- Manufacturer
- PACCAR Incorporated
- Components
- Service brakes, air:supply:quick release valve (Brakes)
Recall repairs are free at authorized dealers. To see if your vehicle is included, enter your VIN at NHTSA.gov or call the manufacturer.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. Methodology