2024 Mack Anthem (An) problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (4) · Power Train (1)
Safety recalls (6)
Seat Belts:front:anchorage 2025-10-06 · campaign 25V666000 · 15,841 vehicles
Defect: 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.
Fix: 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 NHTSA.gov beginning October 13, 2025.
Electrical System:software 2024-10-23 · campaign 24V792000 · 59,338 vehicles
Defect: 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.
Fix: 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.
Seats:critical Fasteners 2024-07-30 · campaign 24V567000 · 242 vehicles
Defect: 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.
Fix: 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.
Steering 2023-12-26 · campaign 23V899000 · 284 vehicles
Defect: 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.
Fix: 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.
Vehicle Speed Control 2023-11-22 · campaign 23V792000 · 650 vehicles
Defect: 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.
Fix: 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.
Electronic Stability Control (Esc) 2023-10-13 · campaign 23V691000 · 13 vehicles
Defect: 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.
Fix: 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.
Service bulletins (117)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Power Train 2026-09-02 · TSB M-913-001 202609 · Service Bulletin/Repair Instructions
parker engine-mounted hydraulic pump service bulletin.
Electrical System 2026-08-10 · CBR 159 202608 · Service Bulletin/Repair Instructions
mack trucks equipped with a cummins engine - engine preheat icon does not illuminate in the instrument cluster (ic) during engine pre-heat (intake air heater) operation - vehicles with 2018instrument cluster update, model year2018 and newer
Engine 2026-06-22 · CBR-2592-1 202606 · Service Bulletin/Repair Instructions
the purpose of this cbr is to provide steps on how to correct a customer complaint of dtc p107b86 accompanied with intermittent loss of throttle.
Unknown Or Other 2026-04-30 · CBR 2575-1 202604 · Service Bulletin/Repair Instructions
cbr - mack chassis - dash panel cracking at mounting to biw.
Power Train 2026-04-09 · CBR 2573-1 202604 · Service Bulletin/Repair Instructions
cbr - mack chassis - through shaft bearing retainer breakage on mack carriers.
Power Train 2026-04-09 · CBR 2362-3 202604 · Service Bulletin/Repair Instructions
cbr - mack carrier nut adhesive change.
Showing the 6 most recent of 117 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-12-01 · Power Train“carrier bearing failure dana premature spicer glued in carrier bearing. caused several vibration.…”
2025-02-14 · Fuel/Propulsion System“the fuel filter housing failed on the male end where the filter screws onto the housing (part # 117m/23699581). part is not available for inspection, manufacturer was given the part for inspection. failure of the fuel filter housing failed during operation of the truck causing the engine to die while driving down the road causing a complete loss o…”
2025-02-14 · Fuel/Propulsion System“the fuel filter housing failed on the male end where the filter screws onto the housing (part # 117m/23699581). part is available for inspection. failure of the fuel filter housing failed during operation of the truck causing the engine to die while driving down the road causing a complete loss of engine power and fuel spill. vehicle manufacture…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.