PETERBILT 2021 PETERBILT 536 Recall
Hazard assessment based on recall description.
This AI-generated summary is provided for general informational purposes only and is derived from publicly available recall notices. It supplements but does not replace official agency classifications or safety instructions.
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2021 PETERBILT 536
Brand
PETERBILT
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2021
PACCAR Incorporated is recalling certain 2021 PETERBILT 536 vehicles due to service brakes, air issues. A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Kenworth T280, T380, 2020-2024 Peterbilt 548, 536, 2024 Peterbilt 537, and 2020-2024 Kenworth T480 trucks. The timing of the trailer brake release may be delayed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Reported concern (NHTSA)
A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.
Recommended Action
Per NHTSA guidance
Dealers will replace the fittings and hoses in the affected valves, free of charge. Owner letters were mailed January 15, 2024. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 23KWJ and 23PBJ.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026