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Service bulletins for the 2020 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.

260 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
K011572832020-04-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ELECTRICAL SYSTEM. Front Accessory Drive Noise, Alternator Belt Wear, Alternator Belt Tensioner Failure - Model Year 2017 And Newer
S74592020-04-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. PI0889 DIFFERENTIAL LOCK ENGAGEMENT STATUS ALARM UPDATE
S74552020-03-09. Service bulletin. EQUIPMENT. GR/GU ABS valve bracket installed incorrectly
S74482020-03-09. Service bulletin. ELECTRICAL SYSTEM:IGNITION; EQUIPMENT; ENGINE. IGNITION CYLINDER REPLACEMENT-CUMMINS ENGINE
K535805142020-01-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE. Brake Drum Inspection - Checking Runout, Wear, And Other Characteristics
K318223252020-01-13. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Mack Chassis - Differential Carrier Models CRD 125 And CRD 150 - New Differential Axle Seal Installation Tool; New Tool Required For New Input And Output Seal Installation
K292957442020-01-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. Updated PM Sensor Removal Procedure - US17+OBD16 and Newer Emissions
K889928922020-01-13. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Assembled Camshaft - Injector Lobe Rotation Inspection For Possible Spun Camshaft Lobe; Diagnostic Trouble Codes (DTC) P0257-00, P2A17-00, Or P2A1F-00, Possible Lack Of Power - US17+OBD16 and Newer Emissions
K208781182019-12-09. Service bulletin. EQUIPMENT. Diagnostic Trouble Codes ( DTC ) P205B-64 - Reductant Tank Temperature Sensor Circuit Range/Performance - Model Year 2018 and Newer
K655277082019-08-19. Service bulletin. EQUIPMENT. Diagnostic Trouble Codes (DTC) P20EE And P103C, Diagnostic Procedure; REPLACES GUIDED DIAGNOSTICS IN PREMIUM TECH TOOL ( PTT ) - US17+OBD16 And Newer Chassis ONLY
K595542552019-07-15. Service bulletin. EQUIPMENT. Mack Chassis - Particulate Matter (PM) Sensor Diagnostic Trouble Codes (DTC) Illuminating The Malfunction Indicator Lamp (MIL); Tech Tip TT-014-2016 - US14+OBD16, US17+OBD16 And Newer Emissions, Common Model Year 2017 And Newer - To Be Used For EVERY Visit
k230235452019-07-15. Service bulletin. EQUIPMENT. Wabco System Saver? HP High Performance Air Dryer - US17 +OBD2019 Emissions, Model Year 2020
K853184132019-05-20. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Noise On The AM Radio Band; Poor Or No Reception On AM Radio - Model Year 2018 And Newer
K638795412019-05-20. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL. Unable To Retrieve "On Request" Messages For PeopleNet Or Omnitracs Modules Installed On The DL5 Data Link; Third Party Electronic Log Device Not Reporting Certain Data
SNM19-0012019-04-22. Service bulletin. EQUIPMENT; VISIBILITY. Please be advised the optional Right Hand Side Down View Mirror will not be installed on vehicle models AN, PI, GR from the factory effective immediately. This is a result of a quality issue that has been discovered.
FSB563-0082019-04-22. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Plugs, Pressure Protection Manifold
K912146782019-04-22. Service bulletin. EQUIPMENT; POWER TRAIN; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Automated Manual Transmission (AMT) Faults - Diagnostic Trouble Codes (DTC) P1052-18 Or MID 130 PID 33 FMI 5 Intermittent Fault In Cold Weather - US07 And Newer Emissions, Model Year 2008 And Newer

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