NHTSA recall 21V476000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V476000 |
| Manufacturer's number | SC0426 |
| Manufacturer | Mack Trucks, Inc. |
| Reported | 2021-06-25 |
| Owners notified | 2021-07-30 |
| Component | SUSPENSION:MULTIPLE AXLE |
| Units potentially affected | 8 |
| Part numbers | SL2065.174, SL2065.176, SL2065.205 |
| Report | Quarterly report 8, for 2023 quarter 2 |
|---|---|
| Filed with NHTSA | 2022-10-05 |
| Vehicles in the campaign | 8 |
| Reported remedied | 8 (100%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2023 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
What can happen
The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.
The remedy
Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks' number for this recall is SC0426.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
| 2020 MACK GRANITE (GU) | Listed as a series or trim of this model. |
|---|---|
| 2021 MACK GRANITE (GU) | Listed as a series or trim of this model. |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| CBR-2016 202412 | 2025-01-02. Service bulletin. Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues. |
|---|---|
| CBR-2014 202402 | 2024-03-05. Service bulletin. CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer. |
| CBR-2016 202401 | 2024-02-02. Service bulletin. CBR: Frame Or Cab Lean |
| M728-005A 202308 | 2023-09-06. Service bulletin. TSB: Barksdale Leveling Valve, Leak Test |
| KC-2292 | 2023-07-06. Service bulletin. Vehicles Equipped With Chalmers Suspension - Frame Bracket Hardware Loose or Interfering |
| KC-2253 | 2023-03-07. Service bulletin. Barksdale Height Control Valve Troubleshooting Guide |
| KC-2253 | 2023-03-06. Service bulletin. Barksdale Height Control Valve Troubleshooting Guide |
| M-852-001 | 2023-01-03. Service bulletin. 2007 document reformatted to be published as a TSB in Impact. Lateral cab movement bracket. |
| M-652-001 | 2022-09-01. Service bulletin. 2009 Document reformatted to be published as a TSB in Impact. Axle Alignment Specifications |
| KC-2170 | 2022-06-07. Service bulletin. Electronically Controlled Suspension (ECS) Losing Air Pressure |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.