The 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."
The risk
A vehicle that drifts out of its lane increases the risk of a crash.
The 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.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack Anthem (an) | 2018, 2019, 2020, 2021, 2022 |
| Mack Granite (gr) | 2018, 2019, 2020, 2021, 2022 |
| Mack Granite (gu) | 2018, 2019, 2020, 2021, 2022 |
| Mack Pinnacle (chu) | 2018, 2019, 2020, 2021, 2022 |
| Mack Pinnacle (cxu) | 2018, 2019, 2020, 2021, 2022 |
| Mack Pinnacle (pi/pn) | 2018, 2019, 2020, 2021, 2022 |
Components: ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack Anthem (an) | 2018 | 0 | 4 |
| Mack Anthem (an) | 2019 | 1 | 6 |
| Mack Anthem (an) | 2020 | 4 | 6 |
| Mack Anthem (an) | 2021 | 2 | 5 |
| Mack Anthem (an) | 2022 | 0 | 5 |
| Mack Granite (gr) | 2018 | 0 | 2 |
| Mack Granite (gr) | 2019 | 2 | 7 |
| Mack Granite (gr) | 2020 | 2 | 7 |
| Mack Granite (gr) | 2021 | 0 | 9 |
| Mack Granite (gr) | 2022 | 2 | 9 |
| Mack Granite (gu) | 2018 | 1 | 4 |
| Mack Granite (gu) | 2019 | 0 | 4 |
| Mack Granite (gu) | 2020 | 0 | 4 |
| Mack Granite (gu) | 2021 | 0 | 4 |
| Mack Granite (gu) | 2022 | 0 | 3 |
| Mack Pinnacle (chu) | 2018 | 0 | 2 |
| Mack Pinnacle (chu) | 2019 | 0 | 3 |
| Mack Pinnacle (chu) | 2020 | 1 | 4 |
| Mack Pinnacle (chu) | 2021 | 0 | 2 |
| Mack Pinnacle (chu) | 2022 | 0 | 2 |
| Mack Pinnacle (cxu) | 2018 | 0 | 3 |
| Mack Pinnacle (cxu) | 2019 | 0 | 2 |
| Mack Pinnacle (cxu) | 2020 | 0 | 3 |
| Mack Pinnacle (cxu) | 2021 | 0 | 2 |
| Mack Pinnacle (cxu) | 2022 | 0 | 2 |
| Mack Pinnacle (pi/pn) | 2018 | 0 | 2 |
| Mack Pinnacle (pi/pn) | 2019 | 0 | 3 |
| Mack Pinnacle (pi/pn) | 2020 | 0 | 4 |
| Mack Pinnacle (pi/pn) | 2021 | 0 | 4 |
| Mack Pinnacle (pi/pn) | 2022 | 0 | 4 |
Other electronic stability control (esc) recalls in 2021
10 of the 988 recall campaigns reported to NHTSA in 2021 concerned the electronic stability control (esc); Mack Trucks, Inc. filed 118 campaigns in all.
| 21V719000 16 Sept 2021 | PACCAR Incorporated |
| 21V647000 18 Aug 2021 | Bentley Motors, Inc. |
| 21V552000 21 Jul 2021 | Kalmar Solutions, LLC |
| 21V360000 17 May 2021 | Daimler Vans USA, LLC |
| 21V167000 11 Mar 2021 | Jaguar Land Rover North America, LLC |
| 21V084000 17 Feb 2021 | Blue Bird Body Company |
| 21V083000 17 Feb 2021 | Blue Bird Body Company |
| 21V071000 12 Feb 2021 | Mercedes-Benz USA, LLC |
NHTSA recalls (public domain) · all recalls of 2021