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PACCAR Incorporated: Service Brakes, Air:Controls:Proportioning Relay Valve (2027 PETERBILT 548)

Vehicles & EquipmentSource: NHTSA · Date: 2026-09-01

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The text below is copied from the official NHTSA record. If anything differs, the official notice is correct.

Company / brand
PACCAR Incorporated
Product
2027 PETERBILT 548
Reason / hazard
Delayed brake response time can increase the risk of a crash.
What to do (remedy)
Dealers will replace the front brake valves and hoses, free of charge. Owner notification letters are expected to be mailed October 31, 2026. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 26PACF.
Distribution / sold at
Potentially affected: 58
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."
Component
SERVICE BRAKES, AIR:CONTROLS:PROPORTIONING RELAY VALVE
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