The 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."
The risk
Delayed brake response time can increase the risk of a crash.
The 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.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Peterbilt 548 | 2027 |
Components: SERVICE BRAKES, AIR:CONTROLS:PROPORTIONING RELAY VALVE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Peterbilt 548 | 2027 | 0 | 2 |
Other service brakes, air recalls in 2026
11 of the 666 recall campaigns reported to NHTSA in 2026 concerned the service brakes, air; PACCAR Incorporated filed 154 campaigns in all.
| 26V583000 9 Sept 2026 | Daimler Trucks North America, LLC |
| 26V506000 4 Aug 2026 | Wabash National Corporation |
| 26V501000 30 Jul 2026 | Autocar, LLC |
| 26V442000 8 Jul 2026 | PACCAR Incorporated |
| 26V382000 11 Jun 2026 | International Motors, LLC |
| 26V355000 2 Jun 2026 | Nova Bus (US) Inc. |
| 26V294000 11 May 2026 | International Motors, LLC |
| 26V261000 23 Apr 2026 | Mack Trucks, Inc. |
NHTSA recalls (public domain) · all recalls of 2026