2027 Peterbilt 537 problems, complaints & recalls
Safety recalls (2)
Fuel System, Diesel:delivery:hoses, Lines/Piping, And Fittings 2026-10-21 · campaign 26V700000 · 26,729 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2022-2023 Kenworth T370, T270, 2022-2027 Kenworth T280, Peterbilt 548, 2023-2027 Kenworth T480, T380, Peterbilt 536, 537, and 2025 Peterbilt 567 vehicles. The remote fuel filter hoses may separate from the fitting, causing a fuel leak and an engine stall.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire. An engine stall increases the risk of a crash.
Fix: Dealers will replace the fuel hoses, free of charge. Owner notification letters will be mailed beginning December 20, 2026. Owners may contact Peterbilt's customer service at 1-940-591-4220 or Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACJ.
Electrical System:wiring:power Distribution Module/Ipdm 2026-07-27 · campaign 26V485000 · 5,925 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2027 Peterbilt and Kenworth vehicles. Please see the recall report for a complete list of models. The power distribution center (PDC) box may be contaminated with oil, which could result in a loss of drive power, Antilock Brake System (ABS) functionality, exterior lighting, windshield wipers, or the defogging system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 103, "Windshield Defr
Risk: A loss of lighting, windshield wipers, ABS function, or a loss of drive power can increase the risk of a crash.
Fix: Dealers will inspect the PDC serial numbers, and replace the PDC boxes as necessary, free of charge. Owner letters were mailed September 23, 2026. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACD.
Service bulletins (3)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-09-19 · 26PACD · Service Campaign
"the pkc group power distribution center (pdc) in certain vehicles may be contaminated with oil, which could result in a loss of power to the engine, antilock brake system, exterior lighting, windshield wipers, and/or defrost system. this issue may also result in non-compliance with multiple federal
Engine 2026-09-11 · P001 · Service Bulletin/Repair Instructions
"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."
Unknown Or Other 2026-08-11 · 14-037 · Service Campaign
an improved transmission bracket is now available for replacement on certain chassis equipped with a paccar tx-12 transmission, featuring a more durable design for enhanced long-term performance.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.