Mack Anthem (An) recalls

What is wrong

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.

Risk

Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.

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 on May 31, 2026.

Recall number 26V351000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2020-2025 Mack MD, 2019-2025 Anthem, Granite, 2024 MD Electric, and 2025 Pinnacle trucks equipped with a passenger bench seat. The seat belt anchorage bracket may be improperly welded. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."

Risk

An improperly welded seat belt anchorage bracket can detach during a crash, increasing the risk of injury.

Remedy

Dealers will install a reinforcement plate, free of charge. Owner letters were mailed January 21, 2026. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0485. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on beginning October 13, 2025.

Recall number 25V666000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem and 2025-2026 Pioneer vehicles. The dynamic steering and oversteer guidance feature may malfunction and cause a loss of steering control.

Risk

A loss of steering control increases the risk of a crash.

Remedy

The oversteer guidance feature will be disabled through an over-the-air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed August 21, 2025. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0483.

Recall number 25V521000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem and Granite vehicles. The power cables may have been improperly routed, which can cause an electrical short.

Risk

An electrical short can cause an engine stall, increasing the risk of a crash. An electrical short can also cause the cables to overheat, increasing the risk of a fire.

Remedy

Dealers will re-route the power cables, free of charge. Owner notification letters were mailed June 16, 2025. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0480.

Recall number 25V382000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem (AN) vehicles. The idler gear bracket fasteners may have been improperly tightened, allowing the idler gear to detach from the engine.

Risk

A detached idler gear can damage the engine, resulting in a stall and increasing the risk of a crash or injury.

Remedy

Dealers will inspect and replace the turbo compound units as necessary, free of charge. Owner notification letters are expected to be mailed April 24, 2025. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0477.

Recall number 25V256000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2020-2025 Anthem, Granite, TerraPro and Pinnacle vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop working.

Risk

Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may have diminished or lost functionality, increasing the risk of a crash.

Remedy

Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed December 9, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0472.

Recall number 24V792000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2024-2025 Anthem, Granite, and Pinnacle vehicles equipped with RollTek driver's seat assemblies. The seat pedestal and seat belt attachment may have been improperly tightened.

Risk

An improperly tightened seat pedestal and seat belt attachment may not restrain the occupant as intended, increasing their risk of injury during a crash.

Remedy

Dealers will replace and tighten the seat pedestal and seat belt attachment bolts, free of charge. Owner notification letters were mailed September 16, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0469.

Recall number 24V567000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem and Pinnacle trucks. The tie rod assemblies may contain an improperly heat-treated ball stud that can fail, resulting in a sudden loss of steering control.

Risk

A sudden loss of steering control increases the risk of a crash.

Remedy

Owners are advised not to drive their vehicles until the remedy has been completed. Dealers will inspect and replace the tie rod ends as necessary, free of charge. Owner notification letters were mailed June 17, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0466.

Recall number 24V424000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025 Mack AN, GR, and TE trucks. The drag link may contain an improperly heat-treated ball stud that can fail, resulting in a sudden loss of steering control.

Risk

A sudden loss of steering control increases the risk of a crash.

Remedy

Owners are advised not to drive their vehicles until the remedy has been completed. Dealers will inspect and replace the drag links, as necessary, free of charge. Owner notification letters were mailed June 20, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0465.

Recall number 24V398000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2024 Anthem, Pinnacle, and Terrapro vehicles. The steering gear assemblies may have been assembled incorrectly with fewer recirculating balls than are required, which may result in a loss of steering control.

Risk

A loss of steering control increases the risk of a crash.

Remedy

Dealers will inspect and replace the defective gears as necessary, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0457.

Recall number 23V899000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2023-2024 GR, AN, LR, and Terrapro vehicles. The engine may not return to idle within 2 seconds if the accelerator pedal position sensor becomes disconnected. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 124, "Accelerator Control Systems."

Risk

An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.

Remedy

Mack will replace the throttle pedal and update the vehicle software, free of charge. Owner letters were mailed February 27, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0455.

Recall number 23V792000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2024 Anthem and Pinnacle vehicles. A software programming error may cause the electronic stability control (ESC) to be inoperative.

Risk

Driving with an inoperative electronic stability control system can increase the risk of a crash.

Remedy

Dealers will reprogram the control unit software, free of charge. Owner notification letters are expected to be mailed December 3, 2023. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0450.

Recall number 23V691000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2021-22 Granite, Anthem, LR, Pinnacle, and Terrapro tractor trailers. The steering gears may have been assembled incorrectly, which can cause the gear to fracture.

Risk

A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.

Remedy

Dealers will replace the steering gear, free of charge. Owner notification letters were mailed on July 29, 2022. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0437.

Recall number 22V401000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2021-2022 Anthem, Granite, and Pinnacle vehicles. The hubcap compression spring can cause the hubcap to separate.

Risk

A separated hubcap can create a road hazard, increasing the risk of a crash.

Remedy

Dealers will remove the hubcap, free of charge. Owner notification letters were mailed June 30, 2021. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0425.

Recall number 21V416000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with "camelback" rear suspension and electronic stability control. The vehicles may not stay in their lane at certain speeds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, "Electronic Stability Control Systems on Heavy Vehicles."

Risk

A vehicle that drifts out of its lane increases the risk of a crash.

Remedy

Mack will notify owners, and dealers will reprogram the vehicle control units, free of charge. The recall began on April 21, 2021. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0423.

Recall number 21V233000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2020 Anthem (AN), Granite (GR), and Pinnacle (PI) vehicles. The castle nuts and cotter pins used to connect the steering drag link to the pitman arm and steering arm may have not been correctly installed, potentially causing separation of the drag link.

Risk

If the drag link separates, loss of steering control my occur, increasing the risk of a crash.

Remedy

Mack will notify owners, and dealers will inspect the drag link attachment points, repairing them, as necessary, free of charge. The recall began January 14, 2020. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0420.

Recall number 19V896000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2020 Anthem and Pinnacle trucks. The conspicuity reflectors at the back of the cab may be blocked by the exhaust system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Assoc. Equipment."

Risk

If the reflectors are blocked, the vehicle's visibility to other drivers may be reduced, increasing the risk of crash.

Remedy

Mack has notified owners, and dealers will install additional reflectors on the back of the cab, free of charge. The recall began April 10, 2019. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0418.

Recall number 19V209000 · Recall details

What is wrong

Mack Trucks Inc. (Mack) is recalling one 2014 Pinnacle (CXU) vehicle and certain 2018-2019 Mack Anthem (AN) vehicles equipped with air brake supply tanks that have an air volume amount ranging from 70% to 96% of the amount required by the regulation. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."

Risk

The undersized air brake supply reservoir may provide an insufficient air supply to properly operate the brakes during repetitive brake applications, reducing braking performance and increasing the risk of a crash.

Remedy

Mack will notify owners and dealers will add an air tank to the affected vehicles, free of charge. The recall began April 10, 2019. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0417.

Recall number 19V107000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 Mack Anthem, Granite, Pinnacle vehicles. The passenger side door down view mirror may detach from the door.

Risk

If the mirror detaches from the door, the mirror may strike another vehicle or pedestrian, increasing the risk of injury or crash.

Remedy

Mack will notify owners, and dealers will properly attach the mirror, free of charge. The recall began March 19, 2019. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0416.

Recall number 19V054000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2018 Anthem (AN) and Pinnacle (CXU) vehicles, equipped with an automated manual transmission. An internal component in the clutch assembly may fail, possibly resulting in unintended vehicle movement.

Risk

Unintended vehicle movement can increase the risk of a crash.

Remedy

Mack has notified owners, and dealers will update the software or replace the clutch, as necessary, free of charge. The recall began on January 25, 2019. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0415.

Recall number 19V047000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Anthem (AN), Granite (GR), and Pinnacle (PI) vehicles. The pinch bolt on the upper steering shaft may not have been tightened, possibly resulting in the steering shaft separating and causing a loss of steering.

Risk

A loss of steering can increase the risk of a crash.

Remedy

Mack will notify owners, and dealers will inspect the vehicles for any loose pinch bolts, correcting the vehicles as necessary, free of charge. The recall began November 30, 2018. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0413.

Recall number 18V778000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Anthem trucks equipped with Jost fifth wheel couplings. The fifth wheel may have an outboard slider bracket that is too narrow, possibly allowing the trailer to separate from the tractor.

Risk

If the trailer separates from the tractor, it can increase the risk of a crash.

Remedy

Mack will notify owners, and dealers will inspect the fifth wheel slider bracket, replacing it as necessary, free of charge. The recall began September 25, 2018. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0411.

Recall number 18V543000 · Recall details

What is wrong

Mack Trucks, Inc. (Mack) is recalling certain 2018 Anthem (AN), Granite (GU), and Pinnacle (CXU, PI) trucks. An electrical overload condition may cause the light control module (LCM) to fail, resulting in the loss of the exterior lighting, interior dashboard lighting, and the windshield wipers.

Risk

Loss of lighting or windshield wiper function can increase the risk of a crash.

Remedy

Mack will notify owners, and dealers will replace and reprogram the LCM, free of charge. The recall began on March 23, 2018. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0409.

Recall number 18V152000 · Recall details