Service bulletins for the 2027 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.
13 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Electrical system are shown. Show all
| TSB M-371-005A 202609 | 2026-10-02. Service bulletin. ELECTRICAL SYSTEM. Jumper Harness Repair for Version 4 Mack Trucks |
|---|---|
| TSB M-373-003 202609 | 2026-10-02. Service bulletin. ELECTRICAL SYSTEM. Power Cable Alternator Replacement |
| CBR 2483-6 202609 | 2026-10-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic instructions for CAN network communication issues. |
| CBR 159 202608 | 2026-09-01. Service bulletin. ELECTRICAL SYSTEM. Mack Trucks Equipped With A Cummins Engine - Engine Preheat Icon Does Not Illuminate In The Instrument Cluster (IC) During Engine Pre-heat (Intake Air Heater) Operation - Vehicles With 2018Instrument Cluster Update, Model Year2018 And Newer |
| GDC26-02 202605 | 2026-06-02. Service bulletin. ELECTRICAL SYSTEM; SEAT BELTS; AIR BAGS. Fault diagnostic information for Supplemental Restraint / Airbag Inflation System (SRS) |
| CBR 2712-7 032026 | 2026-04-02. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR - No Start Condition After Over the Air Programing. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.