2015 MACK GRANITE (GU) Problems, Recalls & Safety Rating

Recall 23V600000 — EXTERIOR LIGHTING:TURN SIGNAL

September 25, 2024 | 27,418 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain 2015-2023 GU and GR vehicles. The turn signals may be positioned incorrectly, reducing their visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Consequence: Low turn signal visibility may not alert other drivers to a turning vehicle, increasing the risk of a crash.

Remedy: Dealers will add additional turn signal lighting, free of charge. Owner letters were mailed September 25, 2024. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0448.

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Recall 16V929000 — SUSPENSION:FRONT:HUB

February 16, 2017 | 200 vehicles affected

Defect: 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.

Consequence: 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.

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Recall 16V099000 — POWER TRAIN:DRIVELINE:DRIVESHAFT

June 7, 2016 | 33,981 vehicles affected

Defect: 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.

Consequence: 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...

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Recall 15V804000 — SERVICE BRAKES, AIR:DISC:CHAMBER

January 27, 2016 | 679 vehicles affected

Defect: 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.

Consequence: 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...

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Recall 15V702000 — ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER

October 22, 2015 | 2,571 vehicles affected

Defect: 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 result in an...

Consequence: 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...

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Recall 15V528000 — SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK

October 15, 2015 | 84 vehicles affected

Defect: 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) number 121, "Air...

Consequence: 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.

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Recall 15V522000 — ELECTRICAL SYSTEM:WIRING

September 30, 2015 | 62 vehicles affected

Defect: 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...

Consequence: 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...

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Recall 15V522000 — SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

September 30, 2015 | 62 vehicles affected

Defect: 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...

Consequence: 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...

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Recall 14V738000 — ENGINE

January 16, 2015 | 40 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain model year 2015 CXU and GU trucks manufactured January 1, 2014, to August 20, 2014. The affected vehicles contain an incorrectly wired Automatic Shut-down Protection System, which may not operate as expected.

Consequence: If the Automatic Shut-down Protection System does not operate as expected, the operator may be unable to control the increase in the engines rpms, increasing the risk of engine failure and vehicle fire.

Remedy: Mack will notify owners, and dealers will inspect the system for correct operation and repair if necessary, free of charge. The recall began on January 16, 2015. Owners may contact Mack customer service at 1-610-709-2131. Mack's number for this recall...

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Recall 14V553000 — SEAT BELTS

October 16, 2014 | 381 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain 2015 CHU, CXU, and GU trucks manufactured June 4, 2014, through June 18, 2014. In the affected vehicles, the bolts that attach the seat belt to the seat frame may not have been torqued to the required specification. This could cause the bolts to loosen over time, allowing the seat belt to detach.

Consequence: If the seat belt detaches from its mounts, the seat belt would fail to properly restrain to the seat occupant, increasing the risk of injury in the the event of a crash.

Remedy: Mack will notify owners, and dealers will tighten the bolts to the required specification, free of charge. The recall began in October 2014. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is SC0383.

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Recall 14V554000 — FUEL SYSTEM, DIESEL

September 29, 2014 | 78 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain model year 2015 GU trucks manufactured April 28, 2014, to June 19, 2014. The Cummins ISL engines in these vehicles may have been equipped with Fleetguard UFF-XT fuel filters, part number FF63009, whose filter shell may separate from the fuel filter nut plate causing the engine to stall without warning.

Consequence: If the engine stalls unexpectedly there is an increased risk of a crash.

Remedy: Cummins will notify owners, and Cummins Service Centers will replace the fuel filter with a non-defective one, free of charge. The recall began on September 2014. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is...

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Recall 14V078000 — ELECTRICAL SYSTEM

April 24, 2014 | 70,208 vehicles affected

Defect: 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 CHU,...

Consequence: 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...

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Recall 25V867000 — SERVICE BRAKES, AIR:DISC:CHAMBER

| 679 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain 2009-2015 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.