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NHTSA·Commercial vehicles·September 1, 2026

Peterbilt recalls 2027 Peterbilt 548 trucks over wrong-size front brake valve and hoses

The front brake valve and hoses may be the wrong size, which can delay the rear brakes from applying and releasing and slow trailer brake response, raising the risk of a crash.

What to do

Dealers will replace the front brake valves and hoses free of charge. Owners may contact Peterbilt's customer service at 1-940-591-4220 and refer to recall number 26PACF.

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NHTSA recall page

Recall details

Product
Peterbilt 548 2027
Company
PACCAR Incorporated
Hazard
Delayed brake response time can increase the risk of a crash.
Units
58 vehicles
Owner notification
October 21, 2026
Reported to NHTSA
September 1, 2026
Identifiers
  • NHTSA campaign number: 26V567000
  • Manufacturer campaign number: 26PACF
  • Model years: 2027

The headline, summary and steps above are written in plain English from the official notice below. Identifiers are copied exactly as the agency published them. Always check the official notice before you act.

Official notice

The notice's own wording from NHTSA.

Component
SERVICE BRAKES, AIR:CONTROLS:PROPORTIONING RELAY VALVE
Defect
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."
Consequence
Delayed brake response time can increase the risk of a crash.
Corrective action
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.

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