Loss of rear brake signal
Defect Summary
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.
Safety Consequence
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.
Corrective Action
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.
Similar Recalls
Other recalls from Paccar Incorporated or involving Service Brakes, Hydraulic.
FAQ: Recall 21V648000
Your rights, the repair process, and what each field on this page means.
What is recall 21V648000?
NHTSA recall 21V648000 was issued by Paccar Incorporated on August 19, 2021. It addresses: Loss of rear brake signal. The recall affects approximately 163 vehicles, with the defect involving the Service Brakes, Hydraulic component.
How do I get this recall repaired?
Contact any authorized Paccar Incorporated dealer and reference NHTSA recall ID 21V648000 or the manufacturer campaign number 21PBJ. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.