AI Damage2016 Mack GU: common problems
The maker issued 183 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 183
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 0 | 0 | 81 |
| Equipment | 0 | 0 | 33 |
| Electrical system | 0 | 0 | 32 |
| Powertrain | 0 | 0 | 30 |
| Engine | 0 | 0 | 18 |
| Suspension | 0 | 0 | 13 |
| Fuel system | 0 | 0 | 11 |
| Vehicle speed control | 0 | 0 | 5 |
| Forward collision avoidance | 0 | 0 | 4 |
| Service brakes | 0 | 0 | 4 |
| Structure | 0 | 0 | 4 |
| Electronic stability control | 0 | 0 | 2 |
| Wheels | 0 | 0 | 2 |
| Air bags | 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.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- CBR
Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During…
- CBR -Telematics Gateway (TGW) Connect Ability Issues
- CBR - Active "Set Park Brake" Message On Drivers Information Display (DID)
- CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft
- CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built…
- CBR
TGW Will Not Connect After SIM Card Replacement
- CBR
- Emissions Campaign
Mack Trucks has determined that certain 2014 - 2018 commercial model year CXU, GU, LEU, LR, MRU Vehicles require a replacement Diesel Particulate Filter (DPF) along with updated software.
- CBR
For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures the line.
- TSB
Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st…
- CBR
Vehicle Speed Factor (K-Factor) Programming - Speed Factor Value Incorrect When Calculated In Premium Tech Tool (PTT); Speedometer Reading Incorrectly Following A Change To Vehicle Speed Factor - US17+OBD16 And Newer…
- TSB
Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
NHTSA lists 183 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 2016 Mack GU?
There are no owner complaints in the NHTSA data for this year; the data comes from 183 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2016 Mack GU?
NHTSA lists 183 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 2016 Mack GU 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 2016 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.