2012 Mack Granite (gu)
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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These records cover every 2012 Mack Granite (gu). To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
13 recalls name the 2012 Mack Granite (gu). Newest first.
Mack Trucks, Inc. (Mack) is recalling certain 2010-2016 Granite (GU) trucks. Vehicles remedied under Recall 15V804 (SC0398) may have had incorrect parts installed during subsequent repairs. The incorrect parts may cause a brake imbalance between the steer and drive axle brakes and the rear brakes to overheat.
Risk and remedy
Risk
Overheated brakes may cause a tire blowout or fire, increasing the risk of a crash.
Remedy
Dealers will inspect and replace the brake chambers as necessary, free of charge. Owner letters were mailed April 14, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0491. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning December 22, 2025. Owners who received a remedy under Recall 15V804 (SC0398) must have the new remedy completed.
Mack Trucks, Inc. (Mack) is recalling certain model year 2012, 2014-2015 and 2017 Granite (GU), 2012-2017 Pinnacle (CHU, CXU), and 2013-2015 and 2017 Titan (TD) trucks manufactured January 7, 2011, to September 29, 2016. The affected vehicles were built with front wheel hubs that cannot support the gross axle weight rating of the front axle.
Risk and remedy
Risk
Overloaded front wheel hubs can result in premature failure of the hubs, bearings, and the related components, which can cause the front hub assembly to separate from the front axle. Because of this, the driver may lose control of the vehicle or parts may be dropped on the road, increasing the risk of a crash.
Remedy
Mack will notify owners, and dealers will replace the hub assemblies, free of charge. The recall began on February 16, 2017. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0406.
Mack Trucks, Inc. (Mack) is recalling certain model year 2012-2016 Granite (GU), Pinnacle (CHU, CXU), TerraPro (LEU, MRU), Titan (TD), and LR trucks manufactured from September 1, 2011, through September 8, 2015. The cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may loosen.
Risk and remedy
Risk
If he cap nut loosens and falls off, the yoke can separate from the axle input shaft and allow the drive shaft to disconnect, increasing the risk of a crash.
Remedy
Mack will notify owners, and dealers will replace the cap nut. The input shaft threads will be inspected for damage. Any damaged input shaft will be replaced. These repairs will be performed free of charge. An interim notice was sent to owners on April 25, 2016. The recall began on June 7, 2016. Owners may contact Mack customer service at 1-610-709-2131. Mack's recall campaign number for this recall is SC0399.
Mack Trucks, Inc. (Mack) is recalling certain model year 2010-2016 Granite 4X2 trucks manufactured September 17, 2009, to July 31, 2015. Due to a brake imbalance between the steer and drive axle brakes, the rear brakes may overheat.
Risk and remedy
Risk
If the rear brakes overheat there would be an increased risk of a tire blowout or a wheel-end fire.
Remedy
Mack will notify owners, and dealers will replace either the brake chambers on the steer axles or the drive axles to correct the imbalance, free of charge. The recall began on January 27, 2016. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is SC0398.
Mack Trucks, Inc. (Mack) is recalling certain model year 2010-2016 Granite (GU), LR, and TerraPro (LEU, MRU) trucks manufactured November 17, 2009 to October17, 2015. The affected trucks have engines with a turbocharger oil supply line that may contact or interfere with the turbocharger inlet elbow, clean air intake clamp, or the air fuel control tube, and…
Risk and remedy
Risk
If the turbocharger oil supply line oil leaks in the proximity of the engine exhaust manifold there would be an increased risk of a fire.
Remedy
Cummins will notify owners on behalf of Mack, and dealers will inspect for oil supply line interference or damage, eliminating the interference and replacing the oil supply line, as necessary, free of charge. The recall is expected to begin November 30, 2015. Owners may contact Cummins at 1-800-343-7357 or Mack customer service at 1-800-866-1177. Cummins' number for this recall is SC0396.
Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2016 Granite (GU) trucks manufactured September 24, 2011, to July 1, 2015. The affected trucks may be equipped with an air brake system reservoir that does not have a sufficient volume. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS)…
Risk and remedy
Risk
If the air brake system reservoir has as insufficient volume, braking performance may be affected, increasing the risk of a crash.
Remedy
Mack will notify owners, and dealers will add additional air brake reservoir volume, free of charge. The recall began on October 15, 2015. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0394.
Mack Trucks, Inc. (Mack) is recalling certain model year 2013 and 2015 Titan (TD), model year 2014 and 2015 Pinnacle (CHU), and model years 2009-2010, 2012, and 2014-2016 Granite (GU) trucks. The chassis harness and air lines may not be properly clipped to the crossmember, which can allow the cables and air lines to fall and get twisted in the driveline.
Risk and remedy
Risk
If the electrical cables and air lines were to fall and get tangled in the driveline, it could affect the electrical system and braking system, increasing the risk of a vehicle crash.
Remedy
Mack will notify owners, and dealers will inspect the vehicles and properly clip the harness and air lines, free of charge. The recall began on September 30, 2015. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is SC0393.
Mack Trucks Inc. (Mack) is recalling certain model year 2010-2014 CHU, CXU, and MRU, 2007 CT and CV, 2008-2014 GU, and 2011-2014 LEU, and TD trucks manufactured February 28, 2006, through November 8, 2013, and equipped Hamsar Electronic Flasher. The hazard warning lights may fail.
Risk and remedy
Risk
A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
Remedy
Mack will notify owners, and dealers will replace the electronic flasher unit, free of charge. The recall will begin by mid-June 2014. Interim letters went out to owners on June 23, 2014. The recall began on July 25, 2014. Owners may contact Mack customer service at 1-866-298-6586. Mack's number for this recall is SC0379.
Mack Trucks, Inc. (Mack) notified the agency on February 20, 2014, that they are recalling certain model year 2010-2012 CHU, CXU, GU and TD vehicles manufactured from June 16, 2009, through July 8, 2011. While continuing to research the scope of the issue, Mack expanded the recall on November 18, 2014 to include certain model year 2008-2009 and 2013-2014…
Risk and remedy
Risk
Deposits of contaminants may result in the circuits being bridged, creating a high resistance short, increasing the risk of a fire.
Remedy
Mack has notified owners, and dealers will inspect the EPDM. If contamination has occurred, dealers will replace the EPDM and address the leak, free of charge. Owners of model year 2010-2012 CHU, CXU, GU and TD vehicles were initially notified April 24, 2014. Owners affected by the recall expansions were notified in February 2015. Owners may contact Mack Trucks at 1-336-393-2000. Mack's number for this recall is SC0375.
Mack IS recalling certain model year 2012 chu, cxu, and gu vehicles, manufactured from october 10, 2011, through november 17, 2011. Hardware used to secure the windshield wiper linkage to the wiper motor may not be sufficiently torqued, and may cause the windshield wiper linkage to detach from the wiper motor. as a result, the windshield wipers will not…
Risk and remedy
Risk
If this occurs, under certain driving conditions the driver's visibility will be reduced, increasing the risk of a crash.
Remedy
Mack will notify owners, and replace the hardware on affected vehicles, free of charge. the safety recall began on august 22, 2012. owners may contact mack trucks at 1-800-866-1177.
Mack IS recalling certain model year 2012-2013 gu, manufactured from december 2, 2010, through january 18, 2012, and equipped with bendix ATR-6 traction relay valves. in extremely cold conditions, these bendix relay valves may potentially develop internal leakage. internal leakage can lead to air pressure being delivered to affected primary or secondary…
Risk and remedy
Risk
Inadvertent brake application can cause the brakes to overheat and lead to a fire. inadvertent brake application can cause the wheels to lock-up leading the driver to lose control of the vehicle, increasing the risk of a crash.
Remedy
Mack will notify owners, and provide a temporary repair until bendix develops a permanent remedy. this service will be performed free of charge. owners may contact mack trucks at 1-800-866-1177.
Mack trucks IS recalling certain model year 2012, chu, cxu, gu, mru, leu, and td trucks equipped with a meritor driveline. the tubing used to assemble the affected drivelines has a nonconforming seam weld with insufficient bonding of the material.
Risk and remedy
Risk
This can result in seam weld fracture when torque IS applied. once the tube seam weld IS fractured, the driveline may become inoperable which may result in a disabled vehicle or debris from the driveline may fall on the roadway, both of which can increase the risk of a crash.
Remedy
Dealers will replace the drivelines free of charge. the safety recall began on july 25, 2011. owners may contact mack trucks at 1-800-528-6586.
Mack trucks IS recalling certain model year 2011-2012 chu, cxu, gu, leu and mru trucks manufactured from october 15, 2010, through january 31, 2011, and equipped with gunite automatic slack adjusters. due to an incomplete "knitting" of the iron at the time of casting, inadequate structural integrity of the slack adjuster housing can occur, which could…
Risk and remedy
Risk
Slack adjusters with this flow notch could crack under normal braking conditions causing loss of braking which could result in a vehicle crash.
Remedy
Mack trucks will notify owners and dealers will replace the subject slack adjusters free of charge. the safety recall began on august 24, 2011. owners may contact mack trucks at 1-800-528-6586.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11008377CBR: 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
- 11008368CBR: 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.
- 11008366CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
- 11006925CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
- 11006923CBR: 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.
- 11003042CBR - Accelerator Pedal: Inspection Instructions
- 11000831CBR: 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 resolve this issue.
- 10251333CBR -Telematics Gateway (TGW) Connect Ability Issues
- 10251331CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
- 10251329CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
- 10248101CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures the line.
- 10246086TSB: 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.
- 10241946TSB: Barksdale Leveling Valve, Leak Test
- 10241945TSB: Air Restriction Indicator
- 10240231CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
- 10237374Service Literature Published and Released in May, 2023
- 10237342CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
- 10237339CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP )
- 10235490TSB: Vibration Diagnostics
- 10235489TSB: Stock Vehicle Storage and Maintenance
- 10235488TSB: Frame Flange Relief Cut-out Templates with 105 millimeter Frame Flanges
- 10235486TSB: New Vehicle Safety Certification Requirements for Vehicles, U.S. and Canada
- 10235365CBR: Mack Granite - Diagnostic Trouble Code (DTC) P208464
- 10235363CBR: Mack Chassis - Allison Reduced Engine Load At A Stop (RELS) Diagnostic Trouble Code P071a Or P07ce - GR,TE,LR Models - Non-Split/Drop Box PTO
- 10235362CBR: Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
- 10232613Mack MMD Alternator Pulley
- 10232609Mack Chassis - No Gauge Cluster Backlight
- 10232608Mack DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
- 10232585Barksdale Height Control Valve Troubleshooting Guide
- 102286302007 document reformatted to be published as a TSB in Impact. Lateral cab movement bracket.
- 10222608TSB-Charge Air Cooler t-clamp install.
- 102190822009 Document reformatted to be published as a TSB in Impact. Axle Carrier Pinion Angles
- 102190812009 Document reformatted to be published as a TSB in Impact. Axle Alignment Specifications
- 102190792009 Document reformatted to be published as a TSB in Impact. Air-Operated Clutch Assist Adjustment and Troubleshooting
- 10215315Programming Failure - Chassis With Cummins Engine And An Allison Transmission
- 10215314NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
- 10215312(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
- 10215307Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.
- 10215305DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions.
- 10215295Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N.
Every Mack Granite (gu) model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.