Mack Trucks, Inc.: Wheels › Lugs/Nuts/Bolts/Studs
Mack Trucks, Inc. reported this defect to federal regulators on May 28, 2026 and put the number of vehicles at risk at 644. The repair is free for as long as the recall stands.
Do not drive
NHTSA attached a do-not-drive advisory to this campaign. It applies to specific production runs, so check your own VIN with the manufacturer or at nhtsa.gov/recalls before driving the vehicle.
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4) vehicles. The wheel lug nuts may loosen and allow the wheel to detach.
The risk
Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.
The remedy
Owners are advised not to drive their vehicles until the repair has been performed. Dealers will inspect the wheel and hub mating surfaces, remove any masking material, and replace any worn components if necessary, free of charge. Owner notification letters were mailed June 22, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0495. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 31, 2026.
8 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2027 Mack Anthem AN (4) | 0 | 6 | 0 | 0 |
| 2027 Mack Granite (gr) | 0 | 1 | 0 | 0 |
| 2027 Mack Pinnacle (pi/Pn) | 0 | 1 | 0 | 0 |
| 2027 Mack Pioneer PR (4) | 0 | 6 | 0 | 0 |
| 2026 Mack Anthem (an) | 0 | 1 | 0 | 0 |
| 2026 Mack Granite (gr) | 0 | 1 | 0 | 0 |
| 2026 Mack Pinnacle (pi/Pn) | 0 | 1 | 0 | 0 |
| 2026 Mack Pioneer PR (4) | 0 | 9 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 26V351000.
Full record for the 2027 Mack Anthem AN (4) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →