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Service bulletins for the 2021 Mack Pinnacle

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.

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

By type

By component

By trouble code

Bulletins, newest first
KC-21702022-06-07. Service bulletin. SUSPENSION. Electronically Controlled Suspension (ECS) Losing Air Pressure
KC-21692022-06-07. Service bulletin. ELECTRICAL SYSTEM. Low Voltage Disconnect (LVD), Function Description
KC-21652022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-21612022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. DEF Pump Cycling periodically Hours After Key Off
KC-21582022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-21572022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-21312022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
KC-21162022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-6262022-06-07. Service bulletin. POWER TRAIN. Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool ( PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
KC-6332022-06-07. Service bulletin. WHEELS. Mack Chassis - Front Hub With Unit-Bearings ( Unitized Wheel Bearings ), Inspection Information And Guidelines - Commonly Model Year 2008 And Newer
KC-6482022-06-07. Service bulletin. UNKNOWN OR OTHER; POWER TRAIN. Mack - PTO Pump Speed Calculator
KC-6512022-06-07. Service bulletin. EQUIPMENT. Mack Dealer Support Communication - Selecting The Proper SR Area For Creating An eService
KC-6522022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Low Oil Pressure Diagnostic Process For 11 Liter Engines
KC-6592022-06-07. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions Prior To US17+OBD16 (Common Rail Fuel System), Model Year 2017 And Older
KC-6862022-06-07. Service bulletin. VEHICLE SPEED CONTROL; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). (Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-6982022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
KC-6992022-06-07. Service bulletin. ELECTRICAL SYSTEM. Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
KC-7002022-06-07. Service bulletin. POWER TRAIN. Mack Chassis - Automated Manual Transmission Model F ( AMT-F, mDrive ) - Short Transmission Replacement; Calibration And/Or Shifting Problems Following Replacement Of A Short Transmission - US17+OBD2016 And Newer Emissions, Model Year 2018 And Newer
KC-7142022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit
KC-7312022-06-07. Service bulletin. POWER TRAIN. Mack Chassis - Equipped With An Automated Manual Transmission Model D or F (mDrive, 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
KC-5872022-06-07. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. Mack Chassis - SNM15-027 A/C Compressor Inspection Required For Warranty Repairs
SLM22-0042022-05-06. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT; STEERING. Service Literature Published and Released in April, 2022
KC-6042022-05-06. Service bulletin. ELECTRICAL SYSTEM. Mack Chassis - Accessory / Auxiliary Connection Points ( Power/Ground Points ) - Anthem, Pinnacle, Granite - Model Year 2018 And Newer
S76302022-05-05. Service bulletin. WHEELS; POWER TRAIN:AXLE HUBS. Proprietary Steerable Axle Hubcap Replacement
KC-3652022-04-06. Service bulletin. EQUIPMENT; SUSPENSION; EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER. Mack Chassis - Technical Service Bulletin M-728-005, Leveling Valve, Leak Test, Air Leaks From The Leveling Valve After The Vehicle Is Parked (Shut Off)

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