2020 MACK GRANITE (GR) — Problems, Recalls & Safety Data
N/A
Safety Rating
3
Owner Complaints
7
Recalls
20
Service Bulletins
0
Investigations
Overview of the 2020 MACK GRANITE (GR)
The 2020 MACK GRANITE (GR) has received a total of 3 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 8 recall campaigns affecting this vehicle, covering issues with SEAT BELTS:FRONT:ANCHORAGE, ELECTRICAL SYSTEM:SOFTWARE, SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. 20 technical service bulletins have been issued by Mack Trucks, Inc. for this model year. The most commonly reported problem area is the Power Train (2 complaints).
Recalls for the 2020 MACK GRANITE (GR)
NHTSA has recorded 8 recalls for the 2020 MACK GRANITE (GR), potentially affecting up to 166,527 vehicles.
Recall 25V666000 — SEAT BELTS:FRONT:ANCHORAGE
| 15,841 vehicles affected
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."
Consequence: 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...
View full details →Recall 24V792000 — ELECTRICAL SYSTEM:SOFTWARE
| 59,338 vehicles affected
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.
Consequence: 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.
View full details →Recall 24V792000 — SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
| 59,338 vehicles affected
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.
Consequence: 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.
View full details →Recall 24V773000 — TIRES
| 49 vehicles affected
Defect: 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...
Consequence: Insufficient tires can fail, increasing the risk of a crash.
Remedy: 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.
View full details →Recall 23V600000 — EXTERIOR LIGHTING:TURN SIGNAL
| 27,418 vehicles affected
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."
Consequence: Low turn signal visibility may not alert other drivers to a turning vehicle, increasing the risk of a crash.
Remedy: 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.
View full details →Recall 21V233000 — ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE
| 557 vehicles affected
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...
Consequence: 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.
View full details →Recall 19V896000 — STEERING:LINKAGES:DRAG:LINK:CONNECTION
| 80 vehicles affected
Defect: 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.
Consequence: 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...
View full details →Recall 19V054000 — VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR
| 3,906 vehicles affected
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.
Consequence: 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.
View full details →Owner Complaints for the 2020 MACK GRANITE (GR)
3 complaints have been filed with NHTSA for the 2020 MACK GRANITE (GR). Below is a breakdown by vehicle component.
| Component | Complaints | Crashes | Fires | Injuries | Deaths |
|---|---|---|---|---|---|
| Power Train | 2 | 0 | 0 | 0 | 0 |
| Power Traindrivelinedifferential Unit | 1 | 0 | 0 | 0 | 0 |
Most Recent Complaints
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 blocking the road. The dealer was able to replace the thru shaft. The differential failed 7 months later and broke the drive shaft in half. Luckily the driver was able to get over to the shoulder and the pieces wedged between the crossmember and bottom of the truck so nothing was dropped onto the highway. The dealer performed the repairs under warranty. There was no warning before this happened.
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.
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.
Safety Rating for the 2020 MACK GRANITE (GR)
NHTSA has not yet tested the 2020 MACK GRANITE (GR) in its New Car Assessment Program.
Technical Service Bulletins for the 2020 MACK GRANITE (GR)
Mack Trucks, Inc. has issued 20 technical service bulletins (TSBs) for the 2020 MACK GRANITE (GR). TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
CBR 2432-2 202601 — STRUCTURE:BODY
CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
P0244-00 (1) — ENGINE AND ENGINE COOLING
Document revised to state that a software update has been released for P0244-00 on TurboCompound US20 - US21 Emission engines.
KC-396 — SERVICE BRAKES, AIR
Mack Chassis - Conventional Models (Anthem, Pinnacle, Granite) - Service Brakes Fail To Release; Brakes Sticking After Brake Pedal Is Released - Built Between 1 November 2018 And 31 March 2019
KC-8 — STRUCTURE
(Back Office Only) Mack Chassis - Granite Models (GR) - Body Raised Out Of Position Message Not Dislaying In Driver Information Display - INT-GEN2
SC0422 — ELECTRICAL SYSTEM
Canada Non-Compliance DRL overide
S7557 — ELECTRICAL SYSTEM
VECU Active code and no MIL Lights
KC-2062 — ELECTRICAL SYSTEM
Mack Chassis - Granite (GR) - Intermittent Or Inoperative Headlights, Front Marker Lights, Turn Signals, And/Or Plow Lights
FSB 801-004 — VISIBILITY
Cab Door Glass Bracket, Installation
S7521 — ENGINE
GU/GR Fan Ring Seal Modification
S7485v2 — EQUIPMENT
CarPlay SW Update with SEM
Showing 10 of 20 technical service bulletins.
NHTSA Investigations for the 2020 MACK GRANITE (GR)
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the MACK GRANITE (GR)
- 2015 MACK GRANITE (GR) — 0 complaints
- 2016 MACK GRANITE (GR) — 0 complaints
- 2017 MACK GRANITE (GR) — 0 complaints
- 2018 MACK GRANITE (GR) — 0 complaints
- 2019 MACK GRANITE (GR) — 4 complaints
- 2020 MACK GRANITE (GR) (current)
- 2021 MACK GRANITE (GR) — 0 complaints
- 2022 MACK GRANITE (GR) — 1 complaint
- 2023 MACK GRANITE (GR) — 2 complaints
- 2024 MACK GRANITE (GR) — 0 complaints
- 2025 MACK GRANITE (GR) — 0 complaints
Other MACK Models
- MACK MACK — 35 total complaints
- MACK ANTHEM (AN) — 12 total complaints
- MACK CXU612 — 12 total complaints
- MACK CX613 — 10 total complaints
- MACK CH600 — 9 total complaints
- MACK GU — 9 total complaints
- MACK RD — 8 total complaints
- MACK CXU — 7 total complaints