Recall 23V899 covers 284 2024 Mack Anthem (An), Pinnacle (Pi/Pn), and Terrapro (Te) trucks for a steering-gear defect. Free repair at any franchised Mack dealer.
Mack is recalling 284 2024 Anthem (An), Pinnacle (Pi/Pn), and Terrapro (Te) trucks under recall 23V899 because steering gear assemblies were built with fewer recirculating balls than required. That defect can cause loss of steering control and increase crash risk; Mack dealers will complete the recall repair free of charge.
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What's wrong?
The steering gear on 2024 Mack Anthem (An), Pinnacle (Pi/Pn), and Terrapro (Te) trucks turns steering wheel input into movement at the front wheels. Inside the gear, recirculating balls roll through a track to reduce friction and help the gear move smoothly under heavy steering loads. The system depends on the correct number of balls being installed during assembly.
On affected trucks, the steering gear assembly process left some gears with fewer recirculating balls than required. That missing support leaves the internal parts carrying load in the wrong way. As the gear is used, the added stress can lead to an internal fracture and a loss of steering control.
Before the internal fracture, the driver can feel the steering become strained or harder to turn. There is no audible or visual warning, so the truck will not give a warning light or sound before the failure.
Who's affected?
The same steering gear family appears across Anthem (An), Pinnacle (Pi/Pn), and Terrapro (Te) trucks.
| 2024 Mack Anthem (An) | steering system |
|---|---|
| 2024 Mack Pinnacle (Pi/Pn) | steering system |
| 2024 Mack Terrapro (Te) | steering system |
| Units affected | 284 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
NHTSA campaign 23V899 ties this defect to loss of steering control, which increases the risk of a crash. A strained steering feel is the driver cue described; there is no audible or visual warning. If steering feels strained, stop safely and call a Mack dealer. Repair is free at any franchised Mack dealer.
What should I do?
- Check your VIN to confirm your 2024 Mack Anthem (An), Pinnacle (Pi/Pn), or Terrapro (Te) is included in this recall.
- Contact your nearest franchised Mack dealer to schedule the free steering-gear inspection and defective-gear replacement that addresses the loss-of-steering-control risk.
- Bring the recall notice Mack mailed, or reference recall number 23V899 when you call.
- Call Mack customer service at 1-800-866-1177 with questions, and reference Mack recall SC0457.
- Limit driving until the dealer completes the repair, and stop in a safe place if steering control changes.
What happens at the repair
At the dealer, a Mack technician inspects the steering gear assembly and replaces defective gears when the inspection finds them. The recall repair is available now, and parts and labor are free under the recall. If you already paid out of pocket for a related steering gear repair before the recall notice, Mack's standard reimbursement plan covers documented expenses tied to this campaign. Bring your repair paperwork to the service desk when you arrive.
| Reimbursement | Reimbursement available |
|---|
Timeline
| December 26, 2023 | NHTSA published the recall |
|---|---|
| December 29, 2023 | Dealer notification began |
| December 29, 2023 | Dealer notification ended |
| February 9, 2024 | Owner notification mailed |
| February 23, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V899?
Recall 23V899 covers 284 2024 Mack Anthem (An), Pinnacle (Pi/Pn), and Terrapro (Te) vehicles with steering gear assemblies assembled with too few recirculating balls. That defect can cause loss of steering control and increase crash risk. Mack dealers will inspect and replace defective gears for free.
What should I do if my 2024 Mack Anthem (An), Pinnacle (Pi/Pn), or Terrapro (Te) is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 23V899. If it is, contact a franchised Mack dealer to schedule the steering gear inspection. The dealer will replace defective gears for free. Reference recall SC0457 or 23V899 when you call.
Does the recall repair cost anything?
No. Federal recall law requires the manufacturer to repair the defect at no cost, and Mack's remedy says dealers will inspect and replace defective steering gears as necessary for free at a franchised Mack dealer.
What is the safety risk in recall 23V899?
The safety risk is loss of steering control. NHTSA campaign 23V899 ties the incorrectly assembled steering gear to increased crash risk, so affected owners should confirm the VIN and arrange the free dealer inspection and replacement path.
When were owners notified about recall 23V899?
Mack mailed owner notification letters on February 9, 2024. If you did not receive a letter, check your VIN because mailing status does not decide whether your specific vehicle is included. Mack customer service is available at 1-800-866-1177.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V899000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 23V899 |
| NHTSA recall # (full) | 23V899000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (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 →