Service bulletins for the 2026 Mack Granite
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
33 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Transmission and driveline are shown. Show all
| TSB M-913-001 202609 | 2026-10-02. Service bulletin. ENGINE; POWER TRAIN. Parker engine-mounted hydraulic pump service bulletin. |
|---|---|
| GDC26-001 202604 | 2026-05-05. Over-the-air update. POWER TRAIN. GDC - Transmission Oil Level Sensor |
| CBR 2573-1 202604 | 2026-05-05. Service bulletin. POWER TRAIN. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers. |
| CBR 2362-3 202604 | 2026-05-04. Service bulletin. POWER TRAIN. CBR - Mack Carrier Nut Adhesive Change. |
| CBR 2218-6 032026 | 2026-04-02. Service bulletin. POWER TRAIN. CBR - Parker F3 Hydraulic Pump Troubleshooting. |
| S4579 092025 | 2025-10-01. Service campaign. UNKNOWN OR OTHER; POWER TRAIN. Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket hardware. |
| S4574 072025 | 2025-08-04. Service campaign. POWER TRAIN. SC - Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U-joint hardware. |
| CBR 2464-1 202505 | 2025-06-02. Service bulletin. POWER TRAIN. Mack Chassis - Rear Axle Overheat |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.