Vehicle Safety Data

2020 MACK GRANITE (GU) — Problems, Recalls & Safety Data

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N/A

Safety Rating

0

Owner Complaints

4

Recalls

ACTIVE RECALL

6

Service Bulletins

0

Investigations

Overview of the 2020 MACK GRANITE (GU)

The 2020 MACK GRANITE (GU) has received a total of 0 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 4 recall campaigns affecting this vehicle, covering issues with EXTERIOR LIGHTING:TURN SIGNAL, SUSPENSION:MULTIPLE AXLE, ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE. 6 technical service bulletins have been issued by Mack Trucks, Inc. for this model year.

Recalls for the 2020 MACK GRANITE (GU)

NHTSA has recorded 4 recalls for the 2020 MACK GRANITE (GU), potentially affecting up to 31,889 vehicles.

Recall 23V600000 — EXTERIOR LIGHTING:TURN SIGNAL

| 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 21V476000 — SUSPENSION:MULTIPLE AXLE

| 8 vehicles affected

Defect: Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.

Consequence: The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.

Remedy: Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks'...

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Recall 21V233000 — ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE

| 557 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with "camelback" rear suspension and electronic stability control. The vehicles may not stay in their lane at certain speeds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, "Electronic Stability Control Systems on...

Consequence: A vehicle that drifts out of its lane increases the risk of a crash.

Remedy: Mack will notify owners, and dealers will reprogram the vehicle control units, free of charge. The recall began on April 21, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0423.

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Recall 19V054000 — VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

| 3,906 vehicles affected

Defect: Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 Mack Anthem, Granite, Pinnacle vehicles. The passenger side door down view mirror may detach from the door.

Consequence: If the mirror detaches from the door, the mirror may strike another vehicle or pedestrian, increasing the risk of injury or crash.

Remedy: Mack will notify owners, and dealers will properly attach the mirror, free of charge. The recall began March 19, 2019. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0416.

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Owner Complaints for the 2020 MACK GRANITE (GU)

No complaints have been filed with NHTSA for the 2020 MACK GRANITE (GU).

Safety Rating for the 2020 MACK GRANITE (GU)

NHTSA has not yet tested the 2020 MACK GRANITE (GU) in its New Car Assessment Program.

Technical Service Bulletins for the 2020 MACK GRANITE (GU)

Mack Trucks, Inc. has issued 6 technical service bulletins (TSBs) for the 2020 MACK GRANITE (GU). TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.

M-700-001 — STRUCTURE

TSB: Frame Flange Relief Cut-out Templates with 105 millimeter Frame Flanges

KC-2253 — SUSPENSION

Barksdale Height Control Valve Troubleshooting Guide

KC-415 — ENGINE AND ENGINE COOLING

Diagnostic Trouble Code ( DTC ) P26E8 Intermittently Lighting The Malfunction Indicator Lamp ( MIL ); Possible Derate Warning - US10+OBD13 And Newer Emissions, Model Year 2014 And Newer

KC-199 — ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER

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 - Model Years 2019 And 2020

KC-130 — ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

Air In The Fuel System Tests, Common Rail Fuel System - US17+OBD16 and Newer Emissions

K58203603 — ENGINE AND ENGINE COOLING

Diagnostic Trouble Code (DTC) P20EE - SCR NOx Catalyst Efficiency Below Threshold (Bank 1) - US17+OBD2019 Emissions, Model Year 2020 ONLY

NHTSA Investigations for the 2020 MACK GRANITE (GU)

There are no NHTSA defect investigations on record for this vehicle.

Other Model Years of the MACK GRANITE (GU)

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Other MACK Models

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