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Service bulletins for the 2023 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.

182 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

Bulletins, newest first
TSB M-913-001 2026092026-10-02. Service bulletin. ENGINE; POWER TRAIN. Parker engine-mounted hydraulic pump service bulletin.
CBR 2573-1 2026042026-05-05. Service bulletin. POWER TRAIN. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2362-3 2026042026-05-04. Service bulletin. POWER TRAIN. CBR - Mack Carrier Nut Adhesive Change.
CBR 2218-6 0320262026-04-02. Service bulletin. POWER TRAIN. CBR - Parker F3 Hydraulic Pump Troubleshooting.
CBR 2464-1 2025052025-06-02. Service bulletin. POWER TRAIN. Mack Chassis - Rear Axle Overheat
CBR-2258 2024092024-10-03. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P107471 - AMT-F
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-2391 2024082024-09-04. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
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.
CBR-2258 2024072024-08-01. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR-2258 2024042024-05-01. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P107471 -AMT-F
CBR-1008 2024042024-05-01. Service bulletin. POWER TRAIN. 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.
CBR-2258 2024022024-03-05. Service bulletin. POWER TRAIN. CBR - Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR-202 2024022024-03-05. Service bulletin. POWER TRAIN. CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
PSM23m2na712023-12-05. Service bulletin. POWER TRAIN. Parts Sales and Marketing Bulletin: Mack Trucks is excited to announce an additional year warranty program on REMACK AMT mDRIVE Complete Transmissions. This extended warranty of 3 years or 350,000 miles on the transmission will be applicable when dealer installed, required parts are installed and is registered via eService.
S3752 2023112023-12-05. Service bulletin. POWER TRAIN. Service Campaign: Certain Mack AN, GR and PI model trucks built with a D4 Dual PTO, have the incorrect length PTO mounting studs installed. With the incorrect studs installed there is a possibly of the retaining nuts coming loose and in certain cases result in a loss of gearbox fluid. Follow the instructions in this service campaign to remove and replace the PTO mounting studs with longer ones.
S3750 2023112023-12-05. Service bulletin. POWER TRAIN. Service Campaign: Certain Mack GR and PI model trucks built with a D3 Dual PTO, have the incorrect length PTO mounting studs installed. With the incorrect studs installed there is a possibly of the retaining nuts coming loose and in certain cases result in a loss of gearbox fluid. Follow the instructions in this service campaign to remove and replace the PTO mounting studs with longer ones.
M-465-001 2023112023-12-05. Service bulletin. POWER TRAIN. TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the current standard shaft and can now be used as a replacement part instead of the standard shaft. The new HD shaft has a new design to increase strength, longevity and life over the standard shaft.
CBR-2112 2023072023-08-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-22792023-07-06. Service bulletin. POWER TRAIN. iLok Fastener Torque
KC-503-Ver32023-06-05. Service bulletin. POWER TRAIN. CBR: Automated Manual Transmission ( AMT ) -Transmission Electronic Control Unit ( TECU ) MID130 PSID 29 FMI 7 /P10AE81 Fault Codes Being Generated
KC-2229-Ver22023-06-05. Service bulletin. POWER TRAIN. CBR: Automated Manual Transmission (AMT) Transmission Kickdown Mode
KC-474-Ver52023-06-05. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
S76742023-04-04. Service bulletin. POWER TRAIN. Snow door bumber install
KC-22582023-04-04. Service bulletin. POWER TRAIN. Diagnostic Trouble Code (DTC) P107471 - AMT-F

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