2020 Mack Granite (gr) Problems, Complaints & Recalls
- Compared with other Granite (gr) years
- Not enough data 1st of 13 for complaints
- Safety recalls
- 7 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 2 complaints with NHTSA about the 2020 Mack Granite (gr). That is the most of any Granite (gr) model year in the database (13 years). The most reported problem area is power train (2 complaints, 100%). There are 7 safety recalls covering this model year.
- 2owner complaints
- 7safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2020 Mack Granite (gr) problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Power Train | 2 | 100% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
2020 Mack Granite (gr) recalls (7)
Tap a recall to see the problem, the risk and the fix.
Seat belts:front:anchorage
Problem: 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; service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/module
Problem: 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.
Tires
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2019-2025 GR and 2018 GU Granite vehicles equipped with non-DOT tested tires. The tires may not have been DOT tested and confirmed to be sufficient for the vehicles. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 119, "New Pneumatic Tires - Other Than Passenger Cars."
Risk: Insufficient tires can fail, increasing the risk of a crash.
Fix: Dealers will inspect and replace the tires as necessary, free of charge. Owner notification letters were mailed November 6, 2024. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0471.
Exterior lighting:turn signal
Problem: 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
Problem: 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.
Steering:linkages:drag:link:connection
Problem: 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.
Fix: 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.
Visibility:rearview mirrors/devices:exterior
Problem: 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.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
The driver was driving down an arterial street and the thru shaft failed on a blind corner. The driver was able to limp the truck to the shoulder. The drivers safety was put at risk as well as everyone else on the road, there would have been no way to move the trailer if it had been loaded and was…
The driver was driving down the freeway and lost all power. The driveshaft fell out of the truck at 70 mph, luckly the truck was working a night shift and traffic was light, only a piece was still attached. The dealer confirmed rear differenial failure. There were no warnings before the failure.
Other Mack Granite (gr) years
← 2019 Granite (gr) · 2021 Granite (gr) →
| Year | Complaints | Recalls |
|---|---|---|
| 2027 Granite (gr) | 0 | 1 |
| 2026 Granite (gr) | 0 | 1 |
| 2025 Granite (gr) | 1 | 8 |
| 2024 Granite (gr) | 0 | 10 |
| 2023 Granite (gr) | 2 | 8 |
| 2022 Granite (gr) | 2 | 9 |
| 2021 Granite (gr) | 0 | 9 |
| 2020 | 2 | 7 |
| 2019 Granite (gr) | 2 | 7 |
| 2018 Granite (gr) | 0 | 2 |
| 2017 Granite (gr) | 0 | 1 |
| 2016 Granite (gr) | 0 | 1 |
| 2015 Granite (gr) | 0 | 1 |
See all Mack Granite (gr) problems by year, every Mack model, or the VIN decoder.
Embed this 2020 Mack Granite (gr) badge on your site
Copy this code into your blog or forum post. It shows live complaint and recall counts and links back here.
Frequently asked questions
What are the most common problems with the 2020 Mack Granite (gr)?
Owners most often report power train problems. The top one, power train, accounts for 2 complaints.
Was there a recall on the 2020 Mack Granite (gr)?
Yes, 7 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2020 Mack Granite (gr) a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Granite (gr) model years, the 2020 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.