Mack · United States · High
Mack Granite (Gr), Pioneer PR (4) +3 more: Wheels — lugs/nuts/bolts/studs
Affects Mack Granite (Gr), Pioneer PR (4), Anthem (An), Pinnacle (Pi/Pn), Anthem An (4) · 2026–2027 — about 644 vehicles.
The hazard
Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.
What to do
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.