Complaints over time
Complaints about the 2025 Mack Granite (GR) by year filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model yearDo not drive
2025 Mack Granite (GR)
Heavy truck, diesel, 6x4, built in United States. Owner complaints on file from Jul 21, 2026 to Jul 21, 2026.
Recall campaigns covering this model year883k vehicles or units across those campaigns
Owner complaints1Close to the median 2025 heavy truck
Severity index0.02025 heavy trucks average 50.0
First 24 months1Complaints in its first two years
Components
100% of complaints about the 2025 Mack Granite (GR) name electrical system
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
8 recall campaigns cover the 2025 Mack Granite (GR)
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 25V-756 | Nov 3, 2025 | LED headlights may fail | Lighting | 6,541 | Part replacement |
| 25V-666 | Oct 6, 2025 | Seat belt anchorage bracket may be improperly welded | Seat belts | 15,841 | Repair or modification |
| 25V-382 | Jun 10, 2025 | Power cables may have been improperly routed, which can cause an electrical short | Electrical system | 8 | Repair or modification |
| 24V-792 | Oct 23, 2024 | Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop working | Electrical system | 59,338 | Software update |
| 24V-773 | Oct 18, 2024 | Tires may not have been DOT tested and confirmed to be sufficient for the vehicles | Tires | 49 | Part replacement |
| 24V-567 | Jul 30, 2024 | Seat pedestal and seat belt attachment may have been improperly tightened | Seat belts | 242 | Part replacement |
| 24V-504 | Jul 2, 2024 | Tie rod assembly ball stud could have been improperly heat treated and can fail | Steering | 59 | Part replacement |
| 24V-398 | Jun 4, 2024 | Drag link may contain an improperly heat-treated ball stud that can fail, resulting in a sudden loss of steering controlDo not drive | Steering | 972 | Part replacement |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2025 Mack Granite (GR)
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Jul 21, 2026Failure Mar 16, 2026Lindon, UTElectrical system, Engine, Power train
Background and Contracted Scope At the recommendation of Mountain West Service Manager Kendall Weaver, I contracted with Mountain West to install an engine-mounted PTO (Power Take-Off) hydraulic pump on Truck #37 for use in a side dump trailer application. Kendall represented that the engine-mounted system would be more powerful and better suited to the truck. A side dump trailer requires bidirectional hydraulic flow — controlled pressure in both directions to operate the dump body. The pump specified and contracted for was Volvo part #20392944, a premium piston-type hydraulic pump with an integrated clutch, allowing the pump to disengage from the engine when not in use. Day 1 of the installation — Mountain West Service Advisor Michael Korgenski emailed: "We are not able to install the pump because without the bypass valve the pump will continue to run dry and burn up. Body builder will need to install and plumb the pump and valve." The Mack dealer intentionally substituted the pump with an incorrect pump that creates constant hydraulic pressure. This incorrect pump has caused hydraulic lines to burst three times on the highway, dumping approximately 20 gallons of hydraulic fluid on the highway, the truck then begins smoking and overheating risking fire. The dealer instead of fixing the truck correctly insists on using the wrong spec parts and wants to build a work around, that they stated may or may not work.
NHTSA complaint 11751707
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
63 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.
- TSB M-913-001 202609 Sep 2, 2026 · Service Bulletin/Repair Instructions
Parker engine-mounted hydraulic pump service bulletin. - CBR 159 202608 Aug 10, 2026 · Service Bulletin/Repair Instructions
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 - CBR 2595 072026 Jul 23, 2026 · Service Bulletin/Repair Instructions
CBR - The purpose of this CBR is to provide information on 2010 and newer Mack Granite chassis experiencing a low frequency vibration. - CBR-2592-1 202606 Jun 22, 2026 · Service Bulletin/Repair Instructions
The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle. - CBR 2575-1 202604 Apr 30, 2026 · Service Bulletin/Repair Instructions
CBR - Mack Chassis - Dash Panel Cracking at Mounting to BIW. - CBR 2573-1 202604 Apr 9, 2026 · Service Bulletin/Repair Instructions
CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers. - CBR 2362-3 202604 Apr 9, 2026 · Service Bulletin/Repair Instructions
CBR - Mack Carrier Nut Adhesive Change. - CBR 2246-5 032026 Mar 2, 2026 · Service Bulletin/Repair Instructions
CBR - Z Spring Bracket Wear. - CBR 2218-6 032026 Mar 3, 2026 · Service Bulletin/Repair Instructions
CBR - Parker F3 Hydraulic Pump Troubleshooting. - CBR 2712-7 032026 Mar 19, 2026 · Service Bulletin/Repair Instructions
CBR - No Start Condition After Over the Air Programing. - S4342 022026 Feb 1, 2026 · Service Campaign
SC - 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 2432-2 202601 Jan 8, 2026 · Service Bulletin/Repair Instructions
CBR - Mack Chassis - AN And GR Models - Door Glass Shattering. - CBR 2107-22 202601 Jan 7, 2026 · Service Bulletin/Repair Instructions
CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)). - S4270 202512 Dec 2, 2025 · Service Campaign
SC - Electric Exhaust Heater Control Unit Update - CBR 199 202512 Dec 4, 2025 · Service Bulletin/Repair Instructions
Vehicles affected by this issue will show coolant runoff on the front rights side of the engine. - CBR 2171-11 202511 Nov 22, 2025 · Service Bulletin/Repair Instructions
CBR - Mack Temperature Sensor Troubleshooting Guide - CBR 199-6 202511 Nov 12, 2025 · Service Bulletin/Repair Instructions
CBR - 13 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In Between The Coolant Pump Housing And Oil Cooler Housing. - S4632 102025 Oct 1, 2025 · Service Campaign
SC - The vehicle’s seat belt tether may have been assembled with incorrect hardware. - CBR 2517-1 102025 Oct 22, 2025 · Service Bulletin/Repair Instructions
CBR - Wiper Linkage Inspection. - CBR 2172-5 082025 Aug 22, 2025 · Service Bulletin/Repair Instructions
CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State. - CBR 407 072025 Jul 17, 2025 · Service Bulletin/Repair Instructions
CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded. - CBR 2488 072025 Jul 28, 2025 · Service Bulletin/Repair Instructions
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data. - CBR 2464-1 202505 May 1, 2025 · Service Bulletin/Repair Instructions
Mack Chassis - Rear Axle Overheat - CBR 2107-21 202505 May 27, 2025 · Service Bulletin/Repair Instructions
Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer - CBR 901-5 202505 May 13, 2025 · Service Bulletin/Repair Instructions
Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer - CBR 170-8 202505 May 28, 2025 · Service Bulletin/Repair Instructions
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 202505 May 6, 2025 · Service Bulletin/Repair Instructions
Lack of lateral structural hood support. - S4404 202504 Apr 2, 2025 · Service Campaign
SC - Mack Trucks has determined that certain Anthem and Granite model trucks have a mislabeled Electronic Fuse & Relay Center (EFRC) Cover. - CBR-2452 202503 Mar 17, 2025 · Service Bulletin/Repair Instructions
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 Clust… - CBR-561 202503 Mar 6, 2025 · Service Bulletin/Repair Instructions
If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years - S4342-202502 Feb 28, 2025 · Service Bulletin/Repair Instructions
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 202501 Jan 15, 2025 · Service Bulletin/Repair Instructions
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 … - S4309 202412 Dec 3, 2024 · Service Campaign
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 f… - CBR-2016 202412 Dec 3, 2024 · Service Bulletin/Repair Instructions
Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues. - CBR-997 202411 Nov 14, 2024 · Service Bulletin/Repair Instructions
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 202411 Nov 6, 2024 · Service Bulletin/Repair Instructions
CBR - 11L Engine block compatibility and Backward Conversion Parts Requirements - CBR-2409 202411 Nov 12, 2024 · Service Bulletin/Repair Instructions
CBR - 13L Engine - Rear Main Oil Seal Leak Model Year 2025 - CBR-2411 202410 Oct 23, 2024 · Service Bulletin/Repair Instructions
CBR - One-Box SCR Weld Leaks. - CBR-2409 202410 Oct 1, 2024 · Service Bulletin/Repair Instructions
CBR - 13L Engine - Rear Main Oil Seal Leak - Model Year 2025 - CBR-2263 202410 Oct 31, 2024 · Service Bulletin/Repair Instructions
CBR - Mack Chassis - Timing Gear Plate Repair - S4088 202409 Oct 1, 2024 · Service Campaign
Service Campaign: Interaxle Driveline Torque - CBR-2376 202409 Sep 19, 2024 · Service Bulletin/Repair Instructions
CBR: Drivers Information Display (DID) Inoperative/Goes Blank During Vehicle Operation - CBR-731 202409 Sep 16, 2024 · Service Bulletin/Repair Instructions
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 202409 Sep 10, 2024 · Service Bulletin/Repair Instructions
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 202409 Sep 13, 2024 · Service Bulletin/Repair Instructions
CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded. - CBR-561 202408 Aug 13, 2024 · Service Bulletin/Repair Instructions
CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions - CBR-523 202408 Aug 13, 2024 · Service Bulletin/Repair Instructions
CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY) - CBR-343 202408 Aug 28, 2024 · Service Bulletin/Repair Instructions
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 202407 Jul 24, 2024 · Service Campaign
Service Campaign: Interaxle Driveline Torque - CBR-2384 202407 Jul 10, 2024 · Service Bulletin/Repair Instructions
CBR: Mack Chassis - Day Cab Glass Breakage - CBR-2356 202407 Jul 9, 2024 · Service Bulletin/Repair Instructions
CBR: Drivers Information Display (DID)Inoperative After Cluster Replacement And Programming - CBR-2350 202407 Jul 2, 2024 · Service Bulletin/Repair Instructions
CBR: Telematics Gateway (TGW) Connect Ability Issues - S3949 202406 Jun 3, 2024 · Service Campaign
SC - Steering Stub Shaft Hardware Replacement - CBR-2384 202406 Jun 29, 2024 · Service Bulletin/Repair Instructions
CBR - Mack Chassis - Day Cab Glass Breakage - CBR-2383 202406 Jun 19, 2024 · Service Bulletin/Repair Instructions
CBR - Accelerator Pedal: Inspection Instructions - CBR-2376 202406 Jun 11, 2024 · Service Bulletin/Repair Instructions
CBR - Drivers Information Display (DID) Inoperative/Goes Blank During Vehicle Operation - CBR-2356 202406 Jun 8, 2024 · Service Bulletin/Repair Instructions
CBR - Drivers Information Display (DID) Inoperative After Cluster Replacement And Programming - CBR-2139 202405 May 2, 2024 · Service Bulletin/Repair Instructions
CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head. A new and improved fuel galley plug has been developed to reso… - CBR-2013 202404 Apr 2, 2024 · Service Bulletin/Repair Instructions
CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information. - CBR-1008 202404 Apr 22, 2024 · Service Bulletin/Repair Instructions
CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.
Source: NHTSA manufacturer communications files.