AI Damage2018 Mack CHU: common problems
The maker issued 213 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 213
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 0 | 0 | 78 |
| Electrical system | 0 | 0 | 37 |
| Powertrain | 0 | 0 | 35 |
| Equipment | 0 | 0 | 29 |
| Fuel system | 0 | 0 | 25 |
| Engine | 0 | 0 | 21 |
| Suspension | 0 | 0 | 13 |
| Service brakes | 0 | 0 | 7 |
| Vehicle speed control | 0 | 0 | 5 |
| Fuel/propulsion system | 0 | 0 | 3 |
| Structure | 0 | 0 | 3 |
| Electronic stability control | 0 | 0 | 2 |
| Backover prevention | 0 | 0 | 1 |
| Communication | 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.
- 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…
- CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers
- CBR - Mack Carrier Nut Adhesive Change
- Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU
- CBR - Z Spring Bracket Wear
- CBR - The purpose of this solution is to give information on Engine Control Module (EMS) Software content
- CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise
US07 And Newer Emissions, Model Year 2008 And Newer.
- 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)).
- CBR - Mack Temperature Sensor Troubleshooting Guide
- CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded
- CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office…
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
- Mack Chassis - Rear Axle Overheat
NHTSA lists 213 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 2018 Mack CHU?
There are no owner complaints in the NHTSA data for this year; the data comes from 213 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2018 Mack CHU?
NHTSA lists 213 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 2018 Mack CHU 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 2018 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.