2020 Peterbilt 337 Problems: 0 Complaints, 3 Recalls

The worst 2020 Peterbilt 337 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Tap a problem to see which part fails, at what mileage and in which other years.

Steering: critical fastenersReported April 25, 2022 · 17,641 vehicles affected

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 railReported May 26, 2021 · 612 vehicles affected

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

Steering: columnReported August 22, 2019 · 109 vehicles affected

What is wrong: PACCAR Incorporated (PACCAR) is recalling certain 2019-2020 Peterbilt 337 and 348 vehicles. An incorrectly located weld in the steering shaft may crack and cause the lower shaft within the steering column to separate from the mating yoke.
Risk: If the steering column separates from the mating yoke, loss of steering control can occur, increasing the risk of a crash.
Remedy: PACCAR has notified owners, and dealers will inspect and replace the steering column, if necessary, free of charge. The recall began August 30, 2019. Owners may contact PACCAR customer service at 1-940-591-422. PACCAR's number for this recall is 19PBD.

Recall number 19V618000 · Recall details

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

Used buying checklistWhat to check on a 2020 Peterbilt 337 before you buy

Is the 2020 Peterbilt 337 reliable?

Owners have filed 0 complaints about the 2020 Peterbilt 337.

What is the most common problem with the 2020 Peterbilt 337?

There are not enough complaints to tell.

How many recalls does the 2020 Peterbilt 337 have?

3 recalls, covering steering and fuel system, diesel.

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