By model year
The 2009 model year drew the most complaints, 1
Owner complaints filed with NHTSA, all years filed, by model year.
Source: NHTSA ODI. Complaints are not verified by NHTSA, and NHTSA publishes no sales volumes, so counts are not rates.
Model line
Mack GU
Every Mack GU model year on file, 2006 to 2018. Pick a year for its recalls, investigations, service bulletins and the full text of owner complaints.
Owner complaints, all model years61 involved a crash, fire, injury or death
Model years132006 to 2018
Recall campaigns14Distinct campaigns listing it
Service bulletins2,640Summed across model years
Components
Engine and cooling leads the Mack GU complaint record
Owner complaints across all model years, by component.
Source: NHTSA ODI complaints file.
Model years
The record for each Mack GU model year
Peer index compares complaints with the median vehicle of the same model year and body class (100 is the median). It corrects for age, not for how many were sold.
| Year | Body | Complaints | Severity index | Peer index | Recalls | Investigations | Bulletins |
|---|---|---|---|---|---|---|---|
| 2018 | Heavy truck | 1 | 0.0 | 33 | 0 | 0 | 243 |
| 2017 | Not decoded | 0 | None | None | 0 | 0 | 243 |
| 2016 | Not decoded | 0 | None | None | 0 | 1 | 269 |
| 2015 | Truck | 1 | 0.0 | 100 | 0 | 0 | 237 |
| 2014 | Truck | 1 | 100.0 | 100 | 0 | 0 | 213 |
| 2013 | Heavy truck | 1 | 0.0 | 50 | 0 | 0 | 184 |
| 2012 | Not decoded | 0 | None | None | 0 | 0 | 162 |
| 2011 | Not decoded | 0 | None | None | 5 | 0 | 239 |
| 2010 | Truck | 1 | 0.0 | 100 | 4 | 0 | 206 |
| 2009 | Truck | 1 | 0.0 | 50 | 7 | 1 | 170 |
| 2008 | Not decoded | 0 | None | None | 9 | 0 | 183 |
| 2007 | Not decoded | 0 | None | None | 2 | 0 | 157 |
| 2006 | Not decoded | 0 | None | None | 0 | 0 | 134 |
Source: NHTSA ODI. Body class from NHTSA's VIN decoder where decoded.
Latest recalls
Recent campaigns covering the Mack GU
- 14V-208 Apr 18, 2014
Hazard warning lights may fail
Lighting · 44k vehicles - 14V-078 Feb 21, 2014
While continuing to research the scope of the issue, Mack expanded the recall on November 18, 2014 to include certain model year 2008-2009 and…
Electrical system · 70k vehicles - 12V-519 Oct 18, 2012
Control box may lose its electrical ground
Electrical system · 260 vehicles - 11V-292 May 20, 2011
As a result of the routing and clipping used, the battery cables may come into contact with frame hardware, which, as a result of chafing, may…
Electrical system · 771 vehicles - 11V-272 May 3, 2011
Due to an incomplete "knitting" of the iron at the time of casting, inadequate structural integrity of the slack adjuster housing can occur, which…
Brakes · 1,524 vehicles - 10V-404 Sep 7, 2010
Actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard…
Brakes · 369 vehicles - 08V-331 Jul 23, 2008
Mack is recalling certain my 2009 trucks equipped with hella headlamps for failing to comply with the photometric output requirements of federal…
Lighting · 265 vehicles - 08V-177 Apr 17, 2008
Molded valve body has an incorrect core pin in the injection mold causing the valve body to be oversized in the double check valve area
Brakes · 66 vehicles - 07V-478 Oct 11, 2007
On certain trucks, the daytime running lights (drl) module may contain a suspect metal-oxide-semiconductor field effect transistor (mosfet) that…
Lighting · 61 vehicles - 07V-361 Aug 15, 2007
On certain trucks equipped with parker single check valves (scv) provided by bendix
Brakes · 22k vehicles
Source: NHTSA ODI recalls file.