2021 Kenworth W990 recalls (5)

Every 2021 Kenworth W990 recall

Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.

• Service Brakes, Hydraulic · NHTSA 24V915000

  Dec 10, 2024Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module

  Problem

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning.

  Risk

  Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.

  Fix

  Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. 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 24KWL and 24PBL.

  Full recall details for 24V915000 →

• Power Train · NHTSA 24V190000

  Mar 20, 2024Power Train:Automatic Transmission:Lever and Linkage:Column Shift

  Problem

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Peterbilt 365, 367, 389, 535, 536, 537, 548, 567, 579, and 2021-2025 Kenworth T180, T280, T380, T480, T680, T880 and W990 trucks. The right-hand gear shifter stalk connectors may have been improperly crimped, resulting in a loss of communication.

  Risk

  A loss of communication between the gear shifter and the transmission may result in the vehicle becoming disabled after coming to a stop, increasing the risk of a crash.

  Fix

  Dealers will inspect and replace the gear shifter assembly as necessary, free of charge. Owner letters were mailed December 15, 2025, then phased after that. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24PBE and 24KWE.

  Full recall details for 24V190000 →

• Service Brakes, Air · NHTSA 21V906000

  Nov 19, 2021Service Brakes, Air

  Problem

  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.

  Risk

  Unintended vehicle movement can increase the risk of a crash or injury.

  Fix

  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.

  Full recall details for 21V906000 →

• Engine · NHTSA 21V080000

  Feb 17, 2021Engine

  Problem

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.

  Risk

  A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.

  Fix

  PACCAR will notify owners, and dealers will properly torque the capscrews and the engine will also be inspected for damage and, if necessary, repaired, free of charge. The recall began on March 29, 2021. 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 21KWA and 21PBB.

  Full recall details for 21V080000 →

• Power Train · NHTSA 20V506000

  Aug 26, 2020Power Train:Axle Assembly

  Problem

  PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 348, 365, 367, 389, 520, 567 and Kenworth T800, T880, W900, W990 vehicles equipped with Watson and Chalin steerable lift axle suspension systems (model SL2065). The axles may have lower rear pivot bolts that are not long enough to sufficiently engage the locking feature of the corresponding nuts.

  Risk

  The short screws can cause the hardware to separate from the suspension system and become road hazards, increasing the risk of a crash and/or injury.

  Fix

  PACCAR will notify owners, and dealers will inspect suspect chassis and replace the pivot bolts, as necessary, free of charge. The recall began September 29, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall is 20PBE and 20KWC.

  Full recall details for 20V506000 →

2021 Kenworth W990 complaints and service bulletins

Kenworth has issued at least 53 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.

Service bulletins by component

• Engine (17)
• Engine and Engine Cooling (13)
• Electrical System (11)
• Equipment (5)
• Power Train (3)
• Structure (3)

Read Kenworth W990 owner complaints and bulletins, every year

Other Kenworth W990 model years

← 2020 Kenworth W990 · 2022 Kenworth W990 →

• 2027 (2)
• 2026 (2)
• 2025 (8)
• 2024 (6)
• 2023 (5)
• 2022 (5)
• 2021 (5)
• 2020 (5)
• 2019 (2)
• 2018 (1)

All Kenworth W990 recalls, every model year