PETERBILT 567 (2021) recall — Service Brakes, Hydraulic
PACCAR recalls 2021 Peterbilt 567 trucks with potential rear brake signal loss causing crash risk. Owners must contact PACCAR for free brake assembly repair.
Use caution until it’s fixed
If loss of the rear brake signal occurs, the vehicle could experience reduced rear braking capability or loss of brakes to the rear axle(s), increasing the risk of a crash.
Contact the company & request your remedy
What happened, in plain English
PACCAR is recalling 2021 Peterbilt 567 trucks that may have a brake signal issue causing reduced rear braking. This could lead to crashes if the problem isn't fixed. Read more at govinfonow.com/recall/80623-peterbilt-567-2021-recall-brake-signal-loss-risk.
Source Summary by GovInfoNow · govinfonow.com/recall/80623-peterbilt-567-2021-recall-brake-signal-loss-risk · Updated October 4, 2026 · Official notice: NHTSA #21V648000
Cite this page
“Peterbilt 567 (2021) Recall: Brake Signal Loss Risk.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/80623-peterbilt-567-2021-recall-brake-signal-loss-risk. Based on NHTSA recall #21V648000 (https://www.nhtsa.gov/recalls?nhtsaId=21V648000).
Why it’s dangerous
The brake signal assembly may not have enough clearance to the rear axle. This can damage the brake hose and cause loss of rear brake signal, reducing braking capability.
Who’s affected
Owners of 2021 Peterbilt 567 trucks are affected. Drivers using these vehicles without the fix face higher crash risk.
How to tell if you have this one
Check for 2021 Peterbilt 567 trucks. The recall covers vehicles with the cross member mounted Hill Start Assist valve assembly.
- Brand
Peterbilt- Category
Vehicle
What to do — step by step
Contact PACCAR
Call PACCAR customer service at 1-940-591-4220 to schedule a free brake assembly repair.
What NHTSA says to do
Dealers will inspect for clearance and re-work the assembly to conform with an updated design, free of charge. Interim owner notification letters were mailed on September 24, 2021. Owner notification letters were mailed on March 11, 2022. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBJ.
Questions people ask
Why is this recall happening?
The cross member mounted Hill Start Assist valve assembly may have insufficient clearance to the rear axle, causing damage to the rear brake hose and loss of rear brake signal.
How do I know if my truck is affected?
Check if you own a 2021 Peterbilt 567 truck with the cross member mounted Hill Start Assist valve assembly.
What should I do if I have this truck?
Contact PACCAR customer service at 1-940-591-4220 to schedule a free brake assembly repair.
Contact Peterbilt
We’ve drafted a message you can send Peterbilt to request your refund or repair — edit it as you like.
Subject: Recall 21V648000 — Peterbilt Peterbilt Hello, I own a Peterbilt that is covered by recall 21V648000 from Peterbilt. The official recall notice states: Dealers will inspect for clearance and re-work the assembly to conform with an updated design, free of charge. Interim owner notification letters were mailed on September 24, 2021. Owner notification letters were mailed on March 11, 2022. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBJ. 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.
Similar recalls
Keep exploring
From people who’ve dealt with this
Experiences, tips, and questions from readers. Every comment is reviewed before it appears.
No comments yet — be the first to share your experience.
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 #21V648000 (August 19, 2021)
- Plain-language summary written by qwen3:4b on October 4, 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.