Service brakes, air: antilock (Kenworth)
Vehicle recall 20V-593. NHTSA received PACCAR Incorporated’s report on Sep 28, 2020.
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The short answer
NHTSA received PACCAR Incorporated’s report on Sep 28, 2020. Copied from NHTSA on Oct 19, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
Longer than expected service-brake release timing may lengthen vehicle stopping distance, increasing the risk of a crash.
PACCAR Incorporated (PACCAR) is recalling certain 2016-2021 Kenworth T680 trucks equipped with a 2.1m Cab and WABCO 6S/6M ABS brake system with drum brakes.
The brake systems were manufactured with a standard rear-brake ABS modulator valve instead of a quick release valve, which may exceed the intended service-brake release timing.
As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, “Air Brake Systems.”
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
- NHTSA’s part: Service brakes, air: antilock.
What should you do?
PACCAR will notify owners, and dealers will replace the standard rear-brake, ABS modulator valve with a quick release valve, free of charge. The recall began November 30, 2020. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR’s number for this recall is 20KWD.
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
- How to reach the firm: 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.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 1,416 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
Who is recalling it?
- Made by PACCAR Incorporated.
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 19, 2026 and checked Oct 19, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 19, 2026.