The worst 2020 Kenworth T370 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 6
Service brakes, air: supply: reservoir/tank
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
- Risk
- Insufficient air volume can reduce braking performance and increase the risk of a crash.
- Remedy
- Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1‑425‑828‑5888. PACCAR's number for this recall is 24KWD.
Recall number 24V145000 · Recall details
Steering: critical fasteners
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990; and 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, and 579 vehicles. The Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may fail.
- Risk
- Fastener failure can result in a loss of steering control, increasing the risk of a crash or injury.
- Remedy
- Dealers will replace and torque the steer arm fasteners, at no charge. Owner notification letters were mailed November 8, 2022. 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 are 22 PBB and 22 KWB.
Recall number 22V277000 · Recall details
Fuel system, diesel: fuel injection system: fuel rail
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2018-2021 Peterbilt 337, 348, 365, 367, 520, 567, Kenworth T270, T370, T440, T470, T800 and T880 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. 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 21KWC and 21PBD.
Recall number 21V391000 · Recall details
Service brakes, air: antilock: ABS warning light
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power to the controller, the dash warning light for the ABS may not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
- Risk
- If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
- Remedy
- PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1‑425‑828‑5888 or Peterbilt customer service at 1‑940‑591‑4220. PACCAR's number for this recall is 20pbc AND 20KWB.
Recall number 20V199000 · Recall details
Service brakes, hydraulic: foundation components: differential proportional valve
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T370 long wheelbase vehicles with larger rear axle spacing. The vehicles may be missing a second R12 relay valve, causing increased brake activation timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
- Risk
- Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.
- Remedy
- PACCAR will notify owners, and Kenworth dealers will install a second R12 relay valve, free of charge. PACCAR issued owners an interim notification on April 14, 2020. The recall began May 6, 2020. Owners may contact Kenworth customer service at 1‑425‑828‑5888. PACCAR's number for this recall is 20KWA.
Recall number 20V086000 · Recall details
Service brakes, air: controls: foot control/valve
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T270 and T370 vehicles. The brake treadle valves may have loose compression fittings, which can cause the air supply hose to separate from the valve.
- Risk
- A separated hose may cause reduced braking ability, increasing the risk of a crash.
- Remedy
- PACCAR will notify owners, and dealers will inspect the brake treadle valve hose connections for loose compression fittings, tightening them as necessary, free of charge. The recall began September 30, 2019. Owners may contact Kenworth customer service at 1‑425‑828‑5888. PACCAR's number for this recall is 19KWD.
Recall number 19V606000 · Recall details
Technical service bulletins for the 2020 Kenworth T370 22
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- Bogie Crossmember Torque Value Update
- Certain vehicle model years 2020-2025 K270, K370, T270, T280, T370, T380, T480, T680, T880, W900 chassis...
- Safety recall
- Info Only
- Safety Recall â Interim Notification
- Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are...
- Safety Recall
- Safety Recall â Cummins Fuel Rail Leak â the federal safety agency ID: 21V391 / TC: 2021-323, Cummins...
- Information Only – Windshield washer pumps have a high No Trouble Found rate
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Questions about the 2020 Kenworth T370
Is the 2020 Kenworth T370 reliable?
Owners have filed 0 complaints about the 2020 Kenworth T370.
What is the most common problem with the 2020 Kenworth T370?
There are not enough complaints to tell.
How many recalls does the 2020 Kenworth T370 have?
6 recalls, covering service brakes, air, steering and fuel system, diesel.
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