Recall 23V185 covers 25 2023-2024 Peterbilt 579 trucks with a park valve module that fails to park. Peterbilt dealer repair is free once available.
Peterbilt is recalling 25 2023-2024 Peterbilt 579 trucks because the Intellipark Tractor Park Valve Module can stick in the un-parked position after the park switch is activated. A park valve module that fails to shift into park creates a rollaway risk and increases the risk of a crash; the Peterbilt dealer repair will be free once available.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
The park valve module on 2023-2024 Peterbilt 579 trucks is part of the electronic parking brake system. When the driver pulls the park switch, the module routes air pressure so the spring brakes apply and hold the truck in the parked position. It is the air-brake valve that turns the switch command into brake action.
On affected trucks, mechanical parts inside the valve module sit at the high end of their design limits. When those parts stack together in the wrong direction, too much air leaks inside the module. The pilot solenoid then cannot build pressure correctly, so the valve stays in the un-parked position even after the park switch is pulled.
The warning signs are on the switch and in the sound of the air system. The park indicator LEDs stay off after the switch is pulled, and the normal air exhaust sound is absent. Those signs mean the spring brakes have not exhausted and the truck is not parked.
Who's affected?
Covers a two-model-year span for the 579, tied to the same parking brake component.
| 2023 Peterbilt 579 | Parking brake |
|---|---|
| 2024 Peterbilt 579 | Parking brake |
| Units affected | 25 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
If the park valve module fails to move into park, the truck can roll away and increase the risk of a crash. If the park switch LEDs stay off after you pull the switch, or you do not hear the normal air exhaust sound, treat the truck as not parked and secure it. Repair will be free at any franchised Peterbilt dealer once available.
What should I do?
- Check your VIN to confirm your 2023-2024 Peterbilt 579 is included in this recall.
- Contact Peterbilt customer service at 1-940-591-4220 to confirm current repair timing before arranging service.
- Ask a franchised Peterbilt dealer about the free PVM replacement that fixes the park-valve module that can stick outside park.
- Bring the owner letter if Peterbilt mailed one, and reference recall number 23V185 when you call.
- Park on level ground and confirm the parking brake is set until the repair is complete.
What happens at the repair
PACCAR has identified the dealer fix, but the final repair is listed as not yet available. Once available, a Peterbilt technician will replace the Intellipark Tractor Park Valve Module with a corrected part. Parts and labor will be free under the recall. PACCAR uses its standard reimbursement plan for this recall. If you already paid for a related PVM repair before the owner notice, ask Peterbilt service how to submit documentation under that plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| March 20, 2023 | NHTSA published the recall |
|---|---|
| May 19, 2023 | Dealer notification began |
| May 19, 2023 | Dealer notification ended |
| May 19, 2023 | Interim owner notification (was planned for this date) |
| June 12, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V185?
Recall 23V185 covers 25 2023-2024 Peterbilt 579 trucks with an Intellipark Tractor Park Valve Module that can stay in the un-parked position when the park switch is activated. That defect can allow rollaway and increase crash risk. Peterbilt's remedy is a corrected PVM replacement, free of charge.
What should I do if my 2023-2024 Peterbilt 579 is on this recall?
Check your VIN to confirm your specific truck is included in recall 23V185. If it is, contact a franchised Peterbilt dealer and ask for the corrected park valve module replacement status. Reference recall number 23V185 and Peterbilt recall number 23PBC when you call.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost. Peterbilt dealers will replace the Intellipark Tractor Park Valve Module with a corrected part free of charge when the remedy is available for your truck.
What is the safety risk?
The safety risk is vehicle rollaway. If the park valve module fails to move into the park position after the park switch is activated, the truck can move unexpectedly and increase crash risk. Keep parking-brake concerns documented and ask the dealer about next steps for your VIN.
When were owners notified about recall 23V185?
PACCAR mailed owner notification letters on June 12, 2023. If you bought the truck used or never received a letter, the VIN check still decides whether your specific 2023-2024 Peterbilt 579 is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V185000 |
|---|---|
| Peterbilt customer service | 1-940-591-4220 |
| NHTSA recall # | 23V185 |
| NHTSA recall # (full) | 23V185000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →