NHTSA campaign 21V906000 · Manufacturer campaign 21KWG and 21PBM
Kenworth and Peterbilt Recall 21V-906: Work Brake May Unintentionally Disengage
NHTSA recall 21V906000 (Manufacturer campaign 21KWG and 21PBM) was reported by PACCAR Incorporated on November 19, 2021, with 908 vehicles potentially affected (per NHTSA). NHTSA's record lists the Kenworth T880, Kenworth W990, Peterbilt 389 and more for model years 2019–2022. Owners were notified on January 3, 2022, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V906000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V906000 (also written 21V-906 or 21V906)
- Filed by
- PACCAR Incorporated
- Manufacturer campaign number
- 21KWG and 21PBM
- Report received
- Potentially affected
- 908 vehicles (per NHTSA)
- Component
- Service Brakes, Air
- Owners notified
Repair completion: 55.73% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V906000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
NHTSA's recall notice
As NHTSA's recall record states it for campaign 21V906000.
Defect description
PACCAR Incorporated (PACCAR) is recalling certain 2019-2022 Kenworth T880, W990, Peterbilt 567, 579, 389, and 2022 Peterbilt 536, 537 wrecker and auto hauler vehicles. The work brake (winch brake) may unintentionally disengage the service brakes during winching operations, causing the vehicle to roll.
Safety consequence
Unintended vehicle movement can increase the risk of a crash or injury.
Manufacturer remedy
Dealers will update the vehicle software, free of charge. Owner notification letters were mailed on January 3, 2022. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth); or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWG and 21PBM.
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.nhtsa.gov.
Sources
Official NHTSA notice for recall 21V906000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.