2021–2022 Peterbilt 367, 2021–2022 Peterbilt 389, 2021–2022 Peterbilt 567 and 1 other model Recall: Cross member mounted Hill Start Assist valve assembly may have…
NHTSA campaign 21V648000 · Service Brakes, Hydraulic · filed Aug 19, 2021 · verified Jul 30, 2026
The defect
PACCAR, Inc. (PACCAR) is recalling certain 2021-2022 Peterbilt 367, 389, 567, and 579 vehicles. The cross member mounted Hill Start Assist valve assembly may have insufficient clearance to the rear axle, causing damage to the rear brake hose and loss of the rear brake signal.
The risk
If loss of the rear brake signal occurs, the vehicle could experience reduced rear braking capability or loss of brakes to the rear axle(s), increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Dealers will inspect for clearance and re-work the assembly to conform with an updated design, free of charge. Interim owner notification letters were mailed on September 24, 2021. Owner notification letters were mailed on March 11, 2022. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBJ.
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.nhtsa.gov.
Affected vehicles
Related recalls
More Peterbilt 367 recalls
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Other campaigns involving Peterbilt vehicles
Source: NHTSA recall database, campaign 21V648000 (manufacturer number 21PBJ). Data last verified Jul 30, 2026.