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2009 Mack GUProblems, recalls & complaints

NHTSA has logged 1 owner complaint about the 2009 Mack GU, most often about the engine. It is covered by 7 safety recalls, and for recall 14V-078 the manufacturer reports only 54% of affected cars repaired.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls7Lowest repair rate 54%Owner complaints10 with a crash, fire or injuryTypical failure mileage59kEngine, median miles

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through September 18, 2018. Updated daily.

Complaints by system

Where the 2009 Mack GU has problems

1 complaint grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

7 recalls

2009 Mack GU recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

77%repaired · 2015 Q4

Turn signal: flasher unit

Recall 14V-208 · Apr 18, 2014 · 44,047 vehicles · 33,754 repaired

Risk. A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.

Problem, fix and repair progress →

54%repaired · 2015 Q3

Electrical system

Recall 14V-078 · Feb 21, 2014 · 70,208 vehicles · 37,850 repaired

Risk. Deposits of contaminants may result in the circuits being bridged, creating a high resistance short, increasing the risk of a fire.

Problem, fix and repair progress →

Show 3 more recalls
–no report yet

Exterior lighting: headlights

Recall 08V-331 · Jul 23, 2008 · 265 vehicles

Risk. THIS STANDARD SPECIFIES REQUIREMENTS FOR REQUIRED ORIGINAL AND REPLACEMENT LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT AND THEIR INSTALLATION.

Problem, fix and repair progress →

–no report yet

Conventional: air

Recall 08V-177 · Apr 17, 2008 · 66 vehicles

Risk. IF THE DOUBLE CHECK VALVE BECOMES LODGED, IN THE EVENT OF A PRIMARY RESERVOIR FAILURE, AIR PRESSURE CAN LEAK PAST THE LODGED DOUBLE CHECK VALVE THEREBY…

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mack.

Best & worst years

2009 vs. every other GU year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the GU median. How we score

'07'08'09'10'11'13'14'15'18
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
1 investigation

NHTSA defect investigations

Federal investigations that included the 2009 Mack GU, and the recalls they led to.

  1. AIR BRAKE CONTROL VALVEPE09010 · closed Jun 18, 2009
    No recall
In owners' words

What GU owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

VEHICLE HAVING ELECTRICAL ISSUES, LIGHTS AND RADIO SHUTTING OFF AND EXHAUST ENGINE BREAK WORKING INTERMITTENTLY. HOOKED UP AND MOSTLY DATA LINK CODES. IC CLUSTER LIGHTS FLASH ON AND OFF WHILE HOOKED UP. FOUND ENGINE ECM FULL OF OIL ON BOTH A AND B CONNECTORS. OIL LEVEL SENSOR IS LEAKING WIC KING…
Complaint 11130249 · Sep 18, 2018 · 58,500 miles

Own a 2009 GU?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.