Service brakes, air: controls: proportioning relay valve (Peterbilt)
Vehicle recall 26V-567. NHTSA received PACCAR Incorporated’s report on Sep 1, 2026.
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The short answer
NHTSA received PACCAR Incorporated’s report on Sep 1, 2026. Copied from NHTSA on Oct 28, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
Delayed brake response time can increase the risk of a crash.
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.”
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
- NHTSA’s part: Service brakes, air: controls: proportioning relay valve.
What should you do?
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.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 58 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
- Peterbilt 5482027
Who is recalling it?
- Made by PACCAR Incorporated.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 28, 2026 and checked Oct 28, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 28, 2026.