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2027 Peterbilt 548 recall: proportioning relay valve

Paccar Incorporated reported this safety recall on September 1, 2026. It covers about 58 vehicles.

vehicles affected
58
reported
Sep 1, 2026
owners notified
Oct 21, 2026

Service brakes, air: controls: proportioning relay valve

What is wrong
PACCAR Incorporated (PACCAR) is recalling certain 2027 Peterbilt 548 trucks. The front brake valve and hoses may be the incorrect size, which can delay the rear service brake application and release, as well as the trailer gladhand application times. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk
Delayed brake response time can increase the risk of a crash.
Remedy
Dealers will replace the front brake valves and hoses, free of charge. Owner notification letters were mailed October 21, 2026. Owners may contact Peterbilt's customer service at 1‑940‑591‑4220. PACCAR's number for this recall is 26PACF.

Recall number 26V567000

Affected vehicles

Questions about recall 26V567000

Is there a recall on the 2027 Peterbilt 548 proportioning relay valve?

Yes. Recall 26V567000, reported on September 1, 2026, covers about 58 vehicles.

What is the fix for recall 26V567000?

Dealers will replace the front brake valves and hoses, free of charge. Owner notification letters were mailed October 21, 2026. Owners may contact Peterbilt's customer service at 1‑940‑591‑4220. PACCAR's number for this recall is 26PACF.

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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