2019 Mack Granite (Gu) problems, complaints & recalls
Safety recalls (4)
Exterior Lighting:turn Signal 2023-08-25 · campaign 23V600000 · 27,418 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2015-2023 GU and GR vehicles. The turn signals may be positioned incorrectly, reducing their visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Low turn signal visibility may not alert other drivers to a turning vehicle, increasing the risk of a crash.
Fix: Dealers will add additional turn signal lighting, free of charge. Owner letters were mailed September 25, 2024. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0448.
Electronic Stability Control (Esc):control Module:software 2021-04-01 · campaign 21V233000 · 557 vehicles
Defect: 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.
Fix: 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.
Visibility:rearview Mirrors/Devices:exterior 2019-01-24 · campaign 19V054000 · 3,906 vehicles
Defect: 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.
Fix: 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.
Exterior Lighting 2018-10-30 · campaign 18V765000 · 755 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Granite (GU) vehicles equipped with snow plow lamp preparation kits. The snow plow headlights can be turned on without other exterior lights, and high beam indicator will not work when the snow plow high beams are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: The driver may operate the vehicle with the snow plow headlights on but the marker and tail lamps off, reducing the vehicle's visibility and increasing the risk of a crash.
Fix: Mack will notify owners, and dealers will update the software related to the plow lights, free of charge. The recall began December 19, 2018. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0414.
Service bulletins (201)
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.
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
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.
Electrical System 2026-02-04 · CBR 126 022026 · Service Bulletin/Repair Instructions
cbr - the purpose of this solution is to give information on engine control module (ems) software content.
Vehicle Speed Control 2026-01-08 · CBR 820-9 202601 · Service Bulletin/Repair Instructions
cbr - mack chassis - engine brake only works with the brake pedal, no function during cruise. us07 and newer emissions, model year 2008 and newer.
Engine 2026-01-07 · CBR 2107-22 202601 · Service Bulletin/Repair Instructions
cbr - mack def level (uqls) sensor troubleshooting guide - us17+obd16 emissions to us22+obd2023 (does not apply to an(4) and pr(4)).
Showing the 6 most recent of 201 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.