PACCAR is recalling certain 2015-2023 Peterbilt 320 and 520 refuse trucks with Haulmaax/EX suspensions due to potential axle instability. Owners must have their suspension inspected by dealers for free.
“Peterbilt 520 (2020) Suspension Recall: Risk of Unstable Axle Causing Crash.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/79953-peterbilt-520-2020-suspension-recall-risk-of-unstable-axle-causing. Based on NHTSA recall #22V939000 (https://www.nhtsa.gov/recalls?nhtsaId=22V939000).
The National Highway Traffic Safety Administration announced on December 16, 2022, that PACCAR Incorporated is recalling certain Peterbilt refuse trucks due to an unstable axle hazard. Dealers will inspect welds and add brackets as necessary at no charge.
How to tell if you have it
Peterbilt 320, 2015-2023
Peterbilt 520, 2015-2023
What to do
Dealers will inspect the welds and add an additional bracket between the tracking rod bracket and axle housing, as necessary, free of charge. Owners may contact Peterbilt's customer service at 1-940-591-4220.
The hazard
The suspension tracking rod brackets may fail and detach from the forward drive axle, causing the axle to become unstable. This instability can decrease vehicle stability and control, increasing the risk of a crash.
Context
GovInfoNow's records show PACCAR Incorporated has 147 other recalls on record since March 9, 2009. Other recent recalls of similar products include Freightliner Business Class M2 (November 5, 2025), Isuzu FTR (October 22, 2025), and Ford F-150 (September 9, 2026). NHTSA received 37 technical service bulletins for the 2017 Peterbilt 320 with a latest date of September 11, 2026.
How to tell if you have this one
Check if your Peterbilt 320 or 520 refuse truck was manufactured between 2015 and 2023 and has Haulmaax/EX suspension. The recall covers specific models sold in the U.S. market.
Brand
Peterbilt
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Dealer for Inspection
Dealers will inspect the welds and add an additional bracket between the tracking rod bracket and axle housing if needed, free of charge.
Check Notification Letter
Owner notification letters are expected to be mailed February 14, 2023, so check your mailbox for this letter.
February 14, 2023
Official remedy
What NHTSA says to do
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.
How this recall unfolded
Recall timeline
1NHTSA received the defect report
2Owner letters expected (expected, per the notice)
Dates from the agency record only; steps without a date are left out.
Take action
Contact Peterbilt
We’ve drafted a message you can send Peterbilt to request your refund or repair — edit it as you like.
Subject: Recall 22V939000 — Peterbilt 520 (2020) Suspension Recall: Risk of Unstable Axle Causing Crash
Hello,
I own a Peterbilt 520 (2020) Suspension Recall: Risk of Unstable Axle Causing Crash that is covered by recall 22V939000 from Peterbilt.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.