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2026-2027 Kenworth T680 and Peterbilt 579 recall: quick release valve

Paccar Incorporated reported this safety recall on July 8, 2026. It covers about 8 vehicles.

vehicles affected
8
reported
Jul 8, 2026
related complaints
2

Service brakes, air: supply: quick release valve

What is wrong
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."
Risk
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
Remedy
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.

Recall number 26V442000

Affected vehicles

Owner complaints about the same problem

Owners of these vehicles have filed 2 complaints about brakes problems.

2027 Kenworth T6802026 Peterbilt 5792027 Peterbilt 579

Questions about recall 26V442000

Is there a recall on the 2026-2027 Kenworth T680 and Peterbilt 579 quick release valve?

Yes. Recall 26V442000, reported on July 8, 2026, covers about 8 vehicles.

What is the fix for recall 26V442000?

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.

Is the recall repair free?

Safety recall repairs are done free of charge at authorized dealers. A dealer can confirm with the VIN whether a specific vehicle is included and whether the repair has already been done.

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