Service bulletins for the 2020 Mack LR
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.
177 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Electrical system are shown. Show all
| KC-354 | 2022-02-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Volvo Chassis - Certain Volvo Trucks Built After January 11, 2016 May Experience an Issue with the Instrument Cluster Display |
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| KC-328 | 2021-10-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Codes (DTC) P208064, P208464, P242B64 and P246F64 Lighting The Malfunction Indicator Lamp (MIL) - US17+OBD19 And Newer Emissions, Model Years 2020 and Newer |
| S7557 | 2021-03-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. VECU Active code and no MIL Lights |
| FSB 284-070 | 2021-01-07. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM:WIRING; EQUIPMENT. DTC P0194-00 and/or P016E-00, Fuel Rail Pressure Sensor (RPS) and wiring harness, Replacement |
| K01157283 | 2020-04-06. Service bulletin. 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 |
| K01157283 | 2020-04-03. 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 |
| S7461 | 2020-04-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. LR OBD CONNECTOR CORROSION FOR DSNY KNEE BOLSTER |
| K33593604 | 2019-07-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Codes (DTC) P0069-64, P10EC-00, P0191-00 and P240F-00 In Different Combinations, Occurrences, And Time Stamps (Two To Four Codes), Possible Vehicle Derate - US17+OBD16, US17+OBD18 Emissions, Common Model Years 2018 And 2019 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.