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Service bulletins for the 2025 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.

63 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
CBR 170-8 2025052025-06-02. Service bulletin. ENGINE. Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure (Low Oil Pressure) (Possible Related Codes - SPN4811 , SPN 100 , PID 100)
CBR 70-8 2025052025-06-02. Service bulletin. STRUCTURE:BODY. Lack of lateral structural hood support.
S4404 2025042025-05-05. Service campaign. ELECTRICAL SYSTEM. SC - Mack Trucks has determined that certain Anthem and Granite model trucks have a mislabeled Electronic Fuse & Relay Center (EFRC) Cover.
CBR-2452 2025032025-04-02. Service bulletin. ELECTRICAL SYSTEM. If the vehicle door is open and the truck is in neutral, a popup message may appear on the Driver Information Display (DID) instructing the operator to shift into neutral. If this message appears while the vehicle is already in neutral, the Instrument Cluster (IC)requires a software update.
CBR-561 2025032025-04-02. Service bulletin. ENGINE. If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659􀁡Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years
S4342-2025022025-03-03. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
CBR-2432 2025012025-02-04. Service bulletin. VISIBILITY/WIPER. This CBR solution provides detailed instructions for diagnosing and addressing window glass shattering issues, including replacement specifications, interference checks, fastener verification, and reinforcement tab adjustments to ensure proper installation and functionality.
S4309 2024122025-01-02. Service campaign. ENGINE. Mack Trucks has identified that certain GR model trucks may encounter an issue with the EECU during a shutdown event. If this occurs, the EECU could become corrupted, leading to multiple fault codes, engine derate, and, in some cases, preventing the truck from starting. For vehicles within the affected population, please follow the instructions below to program the EECU.
CBR-2016 2024122025-01-02. Service bulletin. SUSPENSION. Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues.
CBR-997 2024112024-12-02. Service bulletin. ENGINE. Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.
CBR-2417 2024112024-11-27. Service bulletin. ENGINE. CBR - 11L Engine block compatibility and Backward Conversion Parts Requirements
CBR-2409 2024112024-11-27. Service bulletin. ENGINE. CBR - 13L Engine - Rear Main Oil Seal Leak Model Year 2025
CBR-2411 2024102024-11-04. Service bulletin. ENGINE. CBR - One-Box SCR Weld Leaks.
CBR-2409 2024102024-11-04. Service bulletin. ENGINE. CBR - 13L Engine - Rear Main Oil Seal Leak - Model Year 2025
CBR-2263 2024102024-11-04. Service bulletin. ENGINE. CBR - Mack Chassis - Timing Gear Plate Repair
S4088 2024092024-10-04. Service campaign. POWER TRAIN. Service Campaign: Interaxle Driveline Torque
CBR-2376 2024092024-10-04. Service bulletin. ELECTRICAL SYSTEM. CBR: Drivers Information Display (DID) Inoperative/Goes Blank During Vehicle Operation
CBR-731 2024092024-10-03. Service bulletin. POWER TRAIN. CBR: Automated Manual Transmission (AMT) Model D or F (mDrive and I-Shift, AMT-D, AMT-F) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
CBR-471 2024092024-10-03. Service bulletin. ELECTRICAL SYSTEM. CBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the parameter YYT is set to "Enable" with Premium Tech Tool.
CBR-407 2024092024-10-03. Service bulletin. SERVICE BRAKES. CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
CBR-561 2024082024-09-04. Service bulletin. ENGINE. CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
CBR-523 2024082024-09-04. Service bulletin. ENGINE. CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
CBR-343 2024082024-09-04. Service bulletin. POWER TRAIN. CBR: Mack chassis with an mDRIVE transmission, there have been reports of complete shift assemblies and TECUs being replaced due to technicians being unable to pinpoint the source of the air leak.
S0488 2024072024-08-01. Service campaign. POWER TRAIN. Service Campaign: Interaxle Driveline Torque
CBR-2384 2024072024-08-01. Service bulletin. STRUCTURE:BODY. CBR: Mack Chassis - Day Cab Glass Breakage

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.