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Peterbilt 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.

NHTSA campaign 26V-567 · Reported September 1, 2026 · 58 vehicles affected

AFFECTED MODELS
Peterbilt 548
VEHICLES AFFECTED
58
REMEDY
Dealers will replace the front brake valves and hoses, free of charge.
COST
Free

The short version

PACCAR Incorporated reported a problem with the controls proportioning relay valve. Here is what owners need to know.

WHAT

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."

WHY IT MATTERS

Delayed brake response time can increase the risk of a crash.

WHAT TO DO

Take it to a dealer — they will replace the front brake valves and hoses, free of charge.

Affected vehicles

These model years are included in NHTSA campaign 26V-567.

YEAR RANGEMODEL
2027Peterbilt 548

What changed

Newest first. The record shows both when the recall began and what has changed since.

  1. Recall reported to NHTSA. LATEST

Drive one of these? Check your VIN to see if your specific vehicle is affected.

Check your VIN

What this record means

Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.

Not affiliated

MyAutoRecalls is not affiliated with PACCAR Incorporated or the National Highway Traffic Safety Administration.