NHTSA recall 21V328000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V328000 |
| Manufacturer's number | 21PBE |
| Manufacturer | PACCAR Incorporated |
| Reported | 2021-05-10 |
| Owners notified | 2021-07-09 |
| Component | SERVICE BRAKES, AIR:DISC:CHAMBER; SERVICE BRAKES, AIR |
| Units potentially affected | 13 |
| Part numbers | C75-6011-32024L201 and C75-6011-32024R201 |
| Report | Annual report 3, for 2025 quarter 3 to 2026 quarter 2 |
|---|---|
| Filed with NHTSA | 2026-07-28 |
| Vehicles in the campaign | 13 |
| Reported remedied | 12 (92%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
PACCAR Incorporated (PACCAR) is recalling certain 2021 Peterbilt 348 and 579 vehicles. The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.
What can happen
The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
The remedy
Dealers will replace brake chambers, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact PACCAR (Peterbilt) customer service at 1-940-591-4220. PACCAR's number for this recall is 21PBE.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
| 2021 PETERBILT 348 | |
|---|---|
| 2021 PETERBILT 579 |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| 34-096 | 2023-05-05. Service bulletin. Fix As Fail – All New Model 579 chassis with Bendix radar opti on may have a harness rub against the radiator that is causing possible damage. |
|---|---|
| 13-060 | 2022-09-06. Service bulletin. The service information for Bendix Air Dryer maintenance is being updated to include new procedures. |
| 13-057 | 2022-04-05. Service bulletin. Fix-As-Fail – A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather. |
| 21PBM | 2022-01-06. Service bulletin. Safety Recall – Work Brake May Unintentionally Disengage – NHTSA ID: 21V906, TC: 2021-713. The work brake (also known as winch brake) may unintentionally disengage during winching operations, releasing the service brakes, increasing the risk of crash or injury. The VECU software will be updated to correctly set the speed interlock parameter. |
| 13-055 | 2020-11-05. Service bulletin. Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fail near the bottom of the frame rail. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.