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NHTSA recall,

Kenworth T680 (2027) and Peterbilt 579 (2026-2027)

The trailer air connection quick release valve may be incorrectly installed, which can cause the trailer to become unstable and increase the risk of a crash.

Summary by Recall Canary from the NHTSA notice

What happened

PACCAR Incorporated is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."

The recall was reported to NHTSA on July 8, 2026, and affects 8 vehicles nationwide. An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.

Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary.

More brake defect recalls

What to do

If you own a vehicle in this recall:

  1. Check your VIN (vehicle identification number) at nhtsa.gov/recalls.
  2. Paccar inspected and reinstalled the valves, as necessary, free of charge.
  3. All affected tractors have been repaired and therefore no owner notification letters are necessary. You may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888.

What you get Free repair

Full text from NHTSA

Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.

Is your Peterbilt affected?

2 models

These models and years may be affected.

  • T680Kenworth, model years 2027
  • 579Peterbilt, model years 2026 to 2027

Your VIN confirms it. Find the 17-character VIN on the driver's side of the dashboard or on your registration card.

Check your VIN on nhtsa.gov (opens in a new tab)

Recall details

Reported to NHTSA
Sold in
Nationwide
Manufacturer
PACCAR Incorporated
Component
Brake defect
Campaign
26V442000
Vehicles affected
8
Repair cost
Free of charge
Manufacturer's recall number
26PACC
Manufacturer phone
1-940-591-4220

All recalls from PACCAR Incorporated

Timeline

  1. Reported to NHTSA

  2. Listed on Recall Canary

  3. Summary updated

Other brake defect recalls

See all: Other brake defect recalls

Summary by Recall Canary, written with AI · summary updated Oct 2, 2026 · primary source: U.S. National Highway Traffic Safety Administration (opens in a new tab)