2017 Peterbilt 320 problems, complaints & recalls
Safety recalls (6)
Suspension:multiple Axle 2022-12-16 · campaign 22V939000 · 15,658 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2015-2023 Peterbilt 320 and 520 refuse trucks equipped with Haulmaax/EX suspensions. The suspension tracking rod brackets may fail and detach from the forward drive axle, causing the axle to become unstable.
Risk: An unstable axle can decrease vehicle stability and control, increasing the risk of a crash.
Fix: Dealers will inspect the welds and add an additional bracket between the tracking rod bracket and axle housing, as necessary, free of charge. Owner notification letters are expected to be mailed February 14, 2023. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 22PBL.
Steering:column 2021-01-11 · campaign 21V004000 · 1,021 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2015-2021 Peterbilt 320 and 520 vehicles. The steering column support structure may crack or break in certain right-hand, stand-up drive models.
Risk: If the steering column loosens from the mounting structure, steering control can become affected, increasing the risk of a crash.
Fix: PACCAR will notify owners, and dealers will inspect the 520 models right hand stand-pp steering column structure and replace it if cracks are present, as well as add additional support brackets to the new (if replaced) or existing structure, free of charge. Additionally, for the 520 models, dealers will install a large gusset with triangulating support for the column bracket, free of charge. Owner notification letters were mailed July 30, 2021. Owners may contact Peterbilt customer service at
Service Brakes, Air 2020-03-04 · campaign 20V132000 · 233 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2016-2020 Peterbilt 320 and 520 vehicles with dual foot valves and a liftable tag or tri-drive rear axles. The rear brake signal hose may be missing a quick release valve, possibly causing a delay in their brake release timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Disc Brakes."
Risk: A delayed brake release may increase the risk of crash.
Fix: PACCAR will notify owners, and dealers will check the vehicles for a quick release valve, installing one as necessary, free of charge. The recall began March 24, 2020. Owners may contact PACCAR customer service at 1-940-591-4220. PACCAR's number for this recall is 20PBB.
Exterior Lighting:turn Signal 2019-06-14 · campaign 19V452000 · 343 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 1990-2020 Peterbilt 320 and 520 vehicles built with specific amber rear turn signals. The turn signals may also light up with the stop/tail lights when the brakes are applied. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Rear Turn signals that illuminate at the same time as the brake lights may create confusion and impair the effectiveness of the brake lights, increasing the risk of a crash.
Fix: PACCAR will notify owners, and for trucks with rear amber lights, dealers will add a jumper harness between the chassis electrical harness and amber tail lights, free of charge. The recall began August 1, 2019. Owners may contact PACCAR customer service at 1-940-591-4220. PACCAR's number for this recall is 19PBC.
Parking Brake 2017-11-10 · campaign 17V705000 · 4 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2017 Peterbilt 320 vehicles, equipped with Meritor disc brakes. The park brake chamber on these vehicles may be to small, which can cause the vehicle to move unexpectedly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
Risk: A vehicle with an undersized parking brake could result in the vehicle moving unexpectedly, increasing the risk of a crash or injury to anyone in the path of the vehicle.
Fix: PACCAR will notify owners, and dealers will replace the rear axle park brake chambers, free of charge. The recall began on December 15, 2017. Owners may contact Peterbilt customer service at 1-940-591-4000. PACCAR's number for this recall is 1117E.
Electrical System:ignition:module 2016-06-10 · campaign 16V426000 · 3,227 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain model year 2017 Kenworth C500, T660, T680, T800, T880, and W900 vehicles manufactured March 9, 2016, to April 26, 2016 and 2017 Peterbilt 320, 365, 367, 389, 567, 579, and 587 vehicles manufactured March 10, 2016, to May 6, 2016. The affected vehicles are equipped with Cummins ISX12 or ISX15 engines and have an engine control module (ECM) that may short circuit, causing the engine to stall without warning without the ability to restart it.
Risk: An engine stall can increase the risk of a crash.
Fix: Cummins will notify owners, and Cummins dealers will replace the defective engine control modules, free of charge. The began on July 8, 2016. Owners may contact Cummins customer service at 1-800-343-7357, Kenworth customer service at 1-425-828-5000 or Peterbilt customer service at 1-940-591-4000. PACCAR's numbers for this recall are 16KWB (Kenworth) and 616-C (Peterbilt).
Service bulletins (37)
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."
Engine 2024-11-22 · 32-025 · Service Bulletin/Repair Instructions
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
Power Train 2024-10-22 · 7-700 · Warranty Program/Extension
7/700 service agreement - letter only.
Engine And Engine Cooling 2023-10-03 · E304 · Service Bulletin/Repair Instructions
emissions recall certain vehicles with paccar mx-11 and mx-13 emy2016 engines with less than 300,000 miles (482,803 km) have been shown, in testing, to exceed regulatory limits for nox and n2o emissions. this bulletin now applies to both canadian and u.s. registered vehicles. software is n
Engine And Engine Cooling:exhaust System:emission Control 2023-06-01 · E279 · Service Bulletin/Repair Instructions
an engine software defect exists in certain vehicles equipped with emy17 mx-13 and mx-11 engines that pertains to timer action and count calibrations for a time-based diagnostic. this diagnostic action checks fuel pressure and has no negative impact on tailpipe emissions. this soft ware may incorrec
Engine And Engine Cooling 2022-10-18 · 45-064 · Service Bulletin/Repair Instructions
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
Showing the 6 most recent of 37 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.