2022 Mack Granite (Gu) problems, complaints & recalls
Safety recalls (3)
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.
Wheels:hub 2021-06-02 · campaign 21V416000 · 307 vehicles
Defect: 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.
Fix: 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.
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.
Service bulletins (85)
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 2024-04-22 · CBR-1008 202404 · Service Bulletin/Repair Instructions
cbr: equipped with an automated manual transmission model d or f ( amt-d, amt-f, mdrive) missing x1 value in vda and default settings guidelines, parameterp1aob; fault code p1052-54, error 40,or error 18 encountered during clutch or tran.
Service Brakes, Air 2024-04-02 · CBR-2360 202404 · Service Bulletin/Repair Instructions
cbr: chassis equipped with vecu5 active datalink/communication faults for multiple modules; abs and srs communication faults
Engine And Engine Cooling 2024-04-02 · CBR-2013 202404 · Service Bulletin/Repair Instructions
cbr: turbo compound (tc) hot side noise, diagnostic information.
Electrical System 2024-03-18 · S3852 202403 · Service Bulletin/Repair Instructions
service campaign: on certain mack gr model trucks built between may 10, 2021, to march 28, 2023, it has been determined that the air horn and battery cable could interfere with each other causing the horn to rub through the insulation on the battery cable. to correct these findings, install a new ba
Electrical System 2024-03-01 · CBR-2356 202403 · Service Bulletin/Repair Instructions
cbr: after cluster replacement and programming, the driver information display (did) may not function as designed.
Engine And Engine Cooling 2024-03-01 · CBR-2139 202403 · Service Bulletin/Repair Instructions
cbr: vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. it is possible that the source of the fuel is the rear fuel galley plug in the cylinder head.
Showing the 6 most recent of 85 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.