No complaints are listed for the 2020 Peterbilt 337. NHTSA's API and bulk file list none in this build.
Data build 2026-10-08.
NHTSA lists this vehicle as PETERBILT 337.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
3 recalls.
Date: 2022-04-25. Systems: STEERING.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2021-05-26. Systems: FUEL SYSTEM, DIESEL.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2019-08-22. Systems: STEERING.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Manufacturer communications
30 manufacturer communications.
Communications by system| System | Count |
|---|
| EQUIPMENT | 9 |
|---|
| ENGINE AND ENGINE COOLING | 6 |
|---|
| ELECTRICAL SYSTEM | 4 |
|---|
| STRUCTURE | 4 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 3 |
|---|
| SERVICE BRAKES, AIR | 3 |
|---|
| ENGINE | 2 |
|---|
| SERVICE BRAKES | 2 |
|---|
11037541
Date: 2026-09-11. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
11036291
Date: 2026-08-13. Type: Service Bulletin/Repair Instructions. Systems: FORWARD COLLISION AVOIDANCE.
The verbiage in the Introduction section has been updated.
11010926
Date: 2024-11-22. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warran
11005516
Date: 2024-07-30. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to toggling over center during rough road conditions. With full suspension articulation, HCV bracket flexes and toggles over center the HCV linkage, which results in either deflated airbags or makes th
10232162
Date: 2023-02-10. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, STRUCTURE.
Fix As Fail A?A A Chassis that were manufactured with certain battery cable routing brackets may experience rubbing or chafing of the battery cables.
10225578
Date: 2022-10-18. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This
10222269
Date: 2022-09-09. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
Fix-As-Fail On certain chassis with Low Air Leaf Suspension or Low-Low Air Leaf Suspension, the Height Control Valve (HCV) arm may be rubbing on other components when the bend in the arm is facing outboard. Flipping the bend in the HCV arm inboard prevents the rub.
10219235
Date: 2022-08-03. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.
The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
10209699
Date: 2022-03-03. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, EQUIPMENT ADAPTIVE/MOBILITY, SERVICE BRAKES, AIR, SERVICE BRAKES, HYDRAULIC.
Fix-As-FailA A A?A A A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.A A
10208758
Date: 2022-02-04. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation.