PETERBILT 520 (2020) recall — Service Brakes, Air
PACCAR recalls 2016-2020 Peterbilt 520 trucks with potential brake delay risk. Vehicles may fail FMVSS 121 air brake standards. Owners must have brakes checked by dealers for free.
Use caution until it’s fixed
A delayed brake release may increase the risk of crash.
Contact the company & request your remedy
What happened, in plain English
PACCAR is recalling certain 2016-2020 Peterbilt 520 trucks that may have a brake release delay, increasing crash risk. This could cause the vehicle to fail federal air brake safety standards. Read more at govinfonow.com/recall/79947-peterbilt-520-2020-recall-delayed-brakes-risk-crash.
Source Summary by GovInfoNow · govinfonow.com/recall/79947-peterbilt-520-2020-recall-delayed-brakes-risk-crash · Updated October 5, 2026 · Official notice: NHTSA #20V132000
Cite this page
“Peterbilt 520 (2020) Recall: Delayed Brakes Risk Crash.” GovInfoNow, updated October 5, 2026. https://govinfonow.com/recall/79947-peterbilt-520-2020-recall-delayed-brakes-risk-crash. Based on NHTSA recall #20V132000 (https://www.nhtsa.gov/recalls?nhtsaId=20V132000).
Why it’s dangerous
The rear brake signal hose might be missing a quick release valve. This could cause brakes to stay engaged longer than they should, increasing crash risk during sudden stops.
Who’s affected
Owners of 2016-2020 Peterbilt 520 trucks with dual foot valves and liftable tags or tri-drive rear axles are affected. Commercial truck drivers using these vehicles face the highest risk.
How to tell if you have this one
Check if your Peterbilt 520 was made between 2016 and 2020. Look for dual foot valves and a liftable tag or tri-drive rear axles.
- Brand
Peterbilt- Category
Vehicle
What to do — step by step
Contact PACCAR
Call 1-940-591-4220 to confirm your vehicle is affected and schedule a brake check.
Get Brakes Checked
Dealers will install a quick release valve for free if needed to fix the brake delay issue.
What NHTSA says to do
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.
Questions people ask
Why is this recall happening?
The rear brake signal hose may be missing a quick release valve, causing brake release delays that could lead to crashes.
How do I know if my truck is affected?
Your truck is affected if it was made between 2016 and 2020, has dual foot valves, and a liftable tag or tri-drive rear axles.
Is there a deadline to fix this?
No deadline is specified in the recall notice; dealers will check and fix brakes as needed.
Contact Peterbilt
We’ve drafted a message you can send Peterbilt to request your refund or repair — edit it as you like.
Subject: Recall 20V132000 — Peterbilt Peterbilt Hello, I own a Peterbilt that is covered by recall 20V132000 from Peterbilt. The official recall notice states: 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. 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.
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Where this comes from
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.
- Official source: NHTSA Recall #20V132000 (April 3, 2020)
- Plain-language summary written by qwen3:4b on October 5, 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.