2020 Kenworth T480 problems, complaints & recalls
Safety recalls (1)
Service Brakes, Air 2023-09-29 · campaign 23V661000 · 254 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Kenworth T280, T380, 2020-2024 Peterbilt 548, 536, 2024 Peterbilt 537, and 2020-2024 Kenworth T480 trucks. The timing of the trailer brake release may be delayed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.
Fix: Dealers will replace the fittings and hoses in the affected valves, free of charge. Owner letters were mailed January 15, 2024. 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 23KWJ and 23PBJ.
Service bulletins (7)
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.
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."
Electrical System 2026-05-06 · 02-177 · Service Bulletin/Repair Instructions
troubleshooting procedures for 2.1m cab power windows are now available.
Unknown Or Other 2026-04-16 · 14-034 · Service Bulletin/Repair Instructions
bogie crossmember torque value update - procedure has been updated to correct torque values.
Engine 2026-02-03 · 45-069 · Service Bulletin/Repair Instructions
cummins tsb 210203 has been updated to remove the paccar suction side fuel filter part number from table 1 as the filter is no longer compatible.
Fuel/Propulsion System 2025-12-31 · 43-076 · Service Bulletin/Repair Instructions
certain vehicle model years 2020-2025 k270, k370, t270, t280, t370, t380, t480, t680, t880, w900 chassis have updated greenhouse gas (ghg) labels available for installation.
Service Brakes, Air 2023-12-27 · 23KWJ · Service Bulletin/Repair Instructions
safety recall 23kwj: t280/t380/t480 delayed trailer brake release t280/t380/t480 delayed trailer brake release. safety recall certain t280/t380/t480 chassis built with 2.1m medium duty end of frame trailer connections and tractor protection valves may not meet the standard trailer brake release tim
Showing the 6 most recent of 7 bulletins. Search all of them free at nhtsa.gov.
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.