2019 Mack Pinnacle (pi/pn): common problems

The maker issued 203 service bulletins for this year. Details by component below, with sources.

Key figures

Technical service bulletins (TSB): 203

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Engine and cooling	0	0	78
Electrical system	0	0	45
Powertrain	0	0	29
Equipment	0	0	25
Fuel system	0	0	20
Engine	0	0	18
Suspension	0	0	13
Service brakes	0	0	8
Vehicle speed control	0	0	5
Exterior lighting	0	0	3
Fuel/propulsion system	0	0	3
Electronic stability control	0	0	2
Structure	0	0	2
Lane departure	0	0	1

Comparison

What to check before buying

Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Fuel system. Fuel smell, leaks, rough running, fuel-system codes.

Manufacturer service bulletins

Bulletin titles as filed with NHTSA.

received by NHTSA in 2025–2026 · № 11036580 · Electrical system Mack Trucks Equipped With A Cummins Engine - Engine Preheat Icon Does Not Illuminate In The Instrument…
Mack Trucks Equipped With A Cummins Engine - Engine Preheat Icon Does Not Illuminate In The Instrument Cluster (IC) During Engine Pre-heat (Intake Air Heater) Operation - Vehicles With 2018Instrument Cluster Update…
received by NHTSA in 2025–2026 · № 11034136 · Engine Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP8 Turbo…
Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP8 Turbo Compound (TC) engine may not meet California and Federal Regulations (CARB). This Recall is for updated software…
received by NHTSA in 2025–2026 · № 11032094 · Other CBR - Mack Chassis - Dash Panel Cracking at Mounting to BIW
received by NHTSA in 2025–2026 · № 11032092 · Powertrain CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers
received by NHTSA in 2025–2026 · № 11032086 · Powertrain CBR - Mack Carrier Nut Adhesive Change
received by NHTSA in 2025–2026 · № 11030583 · Suspension CBR - Z Spring Bracket Wear
received by NHTSA in 2025–2026 · № 11029445 · Electrical system CBR - The purpose of this solution is to give information on Engine Control Module (EMS) Software content
received by NHTSA in 2025–2026 · № 11028051 · Vehicle speed control CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise
US07 And Newer Emissions, Model Year 2008 And Newer.
received by NHTSA in 2025–2026 · № 11028032 · Engine CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT…
CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
received by NHTSA in 2025–2026 · № 11027007 · Engine Vehicles affected by this issue will show coolant runoff on the front rights side of the engine
received by NHTSA in 2025–2026 · № 11026025 · Electrical system CBR - Mack Temperature Sensor Troubleshooting Guide
received by NHTSA in 2025–2026 · № 11026021 · Engine CBR - 13 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct…
CBR - 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.

NHTSA lists 203 bulletins for this year; the 12 newest are shown here.

Other years of this model

Questions and answers

What are the most common problems with the 2019 Mack Pinnacle (pi/pn)?

There are no owner complaints in the NHTSA data for this year; the data comes from 203 manufacturer service bulletins.

How many service bulletins (TSB) were issued for the 2019 Mack Pinnacle (pi/pn)?

NHTSA lists 203 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2019 Mack Pinnacle (pi/pn) from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2019 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.