Mack Pioneer recalls
- Mack intake and grille bezels may detach from the vehicle. 2025–2026 Mack Anthem, Pioneer
- Mack inaccurate axle load calculations may cause reduced braking performance while transporting smoothbore tanker trailers. 2026 Mack Anthem, Pioneer
- Mack center roof marker lights may fail to illuminate. 2027 Mack Anthem, Pioneer
- Mack wheel lug nuts may loosen and allow the wheel to detach. 2026 Mack Anthem, Granite, Pinnacle +1 more DO NOT DRIVE
- Mack rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC). 2025–2026 Mack Anthem, Pioneer
- Mack trailer turn signals may not function properly. 2025–2027 Mack Anthem, Pioneer
- Mack load lock clamps, located on the back of the cab, may loosen and cause the load lock bars to become unsecured. 2025 Mack Pioneer
- Mack automatic high beams (AHB) may not switch to low beam headlights as intended. 2025–2026 Mack Anthem, Pioneer
- Mack when towing a trailer, the trailer lights may fail to illuminate due to an improperly manufactured body control module. 2025 Mack Pioneer
- Mack dynamic steering and oversteer guidance feature may malfunction and cause a loss of steering control. 2025 Mack Anthem, Pioneer
- Mack air tanks have an insufficient volume of air for the brake system. 2024–2025 Mack Pinnacle, Pioneer
- Mack electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop working. 2020–2025 Mack Anthem, Granite, Pinnacle +2 more
- Mack seat pedestal and seat belt attachment may have been improperly tightened. 2024–2025 Mack Anthem, Granite, Pinnacle +1 more
- Mack tie rod assembly ball stud could have been improperly heat treated and can fail. 2025 Mack Granite, LR, Pioneer
- Mack tie rod assemblies may contain an improperly heat-treated ball stud that can fail, resulting in a sudden loss of steering control. 2025 Mack Anthem, Pioneer DO NOT DRIVE