Recall 24V122 covers 10 2022-2024 Mack Granite (Gr) trucks with insufficient air volume for braking. Repair is free at any franchised Mack dealer.
Mack is recalling 10 2022-2024 Granite (Gr) trucks because the air tanks do not hold enough air volume for the brake system. That can reduce braking performance and increase the risk of a crash, and Mack dealers will complete the repair free of charge.
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 air tanks on 2022-2024 Mack Granite (Gr) trucks store compressed air for the air brake system. When the driver presses the brake pedal, the system uses that stored air to apply the brakes and keep reserve air available for repeated brake applications.
For these 10 trucks, Mack found a calculation error after customer-requested changes were made to the vehicle. The installed air tank setup does not provide the air volume required under FMVSS 121 for air brake systems. The issue is the stored air capacity, not a single cracked line or broken pedal part. New air tanks increase the available air volume so the brake system meets the requirement.
There is no warning sign before failure. Because this is an air-volume problem, the truck can feel normal even though the installed tanks do not carry enough reserve air for the required brake-system standard.
Who's affected?
Spans 3 Granite (Gr) model years, all tied to the same brake system calculation issue.
| 2022 Mack Granite (Gr) | brake system |
|---|---|
| 2024 Mack Granite (Gr) | brake system |
| 2023 Mack Granite (Gr) | brake system |
| Units affected | 10 |
| 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?
Insufficient air volume can reduce braking performance, which means the truck needs more distance and control margin to stop and increases the risk of a crash. Until the repair is done, drive cautiously, leave extra following distance, and schedule service soon if your VIN is included. Repair is free at any franchised Mack dealer.
What should I do?
- Check your VIN to confirm your 2022-2024 Mack Granite (Gr) is included in this recall.
- Contact a franchised Mack dealer to schedule the free air-tank-volume repair that restores the brake system's required air supply.
- Bring the owner letter if you have it, and reference recall number 24V122 when you call.
- Drive cautiously until the repair is complete. Leave extra following distance and avoid hard braking when safe.
- Call Mack customer service at 1-800-866-1177 with questions, and mention Mack recall SC0458.
What happens at the repair
At the dealer, a Mack technician adds additional air tank volume so the brake system has the air reserve required for proper operation. The recall repair is free, with parts and labor covered. Mack uses its standard reimbursement plan for eligible out-of-pocket repairs paid before the recall notice. If you already paid for a related air tank or brake air system repair, bring receipts and service paperwork to the Mack service desk and ask how to submit documentation.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 19, 2024 | NHTSA published the recall |
|---|---|
| February 23, 2024 | Dealer notification began |
| February 23, 2024 | Dealer notification ended |
| March 14, 2024 | Owner notification mailed |
| April 15, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V122?
Recall 24V122 covers 10 2022-2024 Mack Granite (Gr) trucks with air tanks that have insufficient air volume for the brake system. Reduced air volume can reduce braking performance and increase crash risk. Mack dealers will add air tank volume for free.
What should I do if my 2022-2024 Mack Granite (Gr) is on this recall?
Check your VIN to confirm your specific truck is included in recall 24V122. If it is, contact a franchised Mack dealer to schedule the added air tank volume repair. Reference recall number 24V122 or Mack recall SC0458 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Mack dealers will add the needed air tank volume free of charge, including parts and labor, for affected 2022-2024 Granite (Gr) trucks.
When were owners notified about this Mack recall?
Mack mailed owner notification letters on March 14, 2024. If you bought the truck used or never received the letter, check your VIN to confirm whether your Granite (Gr) is included, then call a Mack dealer with recall number 24V122.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V122000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 24V122 |
| NHTSA recall # (full) | 24V122000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
- Download Owner Notice (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 →