NHTSA recall 21V573000
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 | 21V573000 |
| Manufacturer's number | SC0427 |
| Manufacturer | Mack Trucks, Inc. |
| Reported | 2021-07-27 |
| Owners notified | 2021-08-10 |
| Component | SERVICE BRAKES, AIR |
| Units potentially affected | 124 |
| Part numbers | TDA2210C8323 |
| Report | Annual report 3, for 2025 quarter 3 to 2026 quarter 2 |
|---|---|
| Filed with NHTSA | 2026-07-01 |
| Vehicles in the campaign | 124 |
| Reported remedied | 88 (70%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2026 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) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
What can happen
Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
The remedy
Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0427.
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.
| 2021 MACK GRANITE (GR) | Listed as a series or trim of this model. |
|---|---|
| 2021 MACK LR | |
| 2021 MACK TE |
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 407 072025 | 2025-08-04. Service bulletin. CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded. |
|---|---|
| CBR-407 202409 | 2024-10-03. Service bulletin. CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded. |
| CBR-2360 202404 | 2024-05-01. Service bulletin. CBR: Chassis Equipped With VECU5 Active Datalink/Communication Faults For Multiple Modules; ABS And SRS Communication Faults |
| CBR-2313 202309 | 2023-10-03. Service bulletin. CBR: "Spitting" or "puffing" of air from purge valve. |
| KC-2012-Ver3 | 2023-06-05. Service bulletin. CBR: SNM 20-005 - HD Disc Brake Rotor Upgrade |
| KC-2140 | 2022-12-05. Service bulletin. Mack Chassis - P05E662 Park brake Sensor/Switch Circuit Range/Performance, Signal Compare failure - Diagnostic Instructions - US21+OBD21 Emissions |
| SLM22-004 | 2022-05-06. Service bulletin. Service Literature Published and Released in April, 2022 |
| KC-417 | 2022-02-04. Service bulletin. Mack Chassis - Air System Schematics For Models - MRU, LEU And ( LR ) Using The Same Schematic As the LEU |
| KC-286 | 2022-01-06. Service bulletin. Mack Chassis - FSB 563-008 Plugs, Pressure Protection Manifold - New Brass Plugs For Noregon Pressure Protection Manifold (PPM) |
| KC-215 | 2022-01-06. Service bulletin. Mack Chassis - Granite (GR) Models Equipped With An Allison Transmission And Split Box PTO - "Release Parking Brake" Message Present In Instrument Cluster When Parking Brake Is Released - Model Year 2018 And Newer |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.