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2009 Mack GU recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

7 recalls found in NHTSA data as of September 22, 2026

For the 2009 Mack GU. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Mack been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.

2009 Mack GU recalls, newest first

April 18, 2014NHTSA 14V20800044,047 vehicles potentially affected

Exterior lighting › Turn signal › Flasher unit

Summary
Mack Trucks Inc. (Mack) is recalling certain model year 2010-2014 CHU, CXU, and MRU, 2007 CT and CV, 2008-2014 GU, and 2011-2014 LEU, and TD trucks manufactured February 28, 2006, through November 8, 2013, and equipped Hamsar Electronic Flasher. The hazard warning lights may fail.
Consequence
A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
Remedy
Mack will notify owners, and dealers will replace the electronic flasher unit, free of charge. The recall will begin by mid-June 2014. Interim letters went out to owners on June 23, 2014. The recall began on July 25, 2014. Owners may contact Mack customer service at 1-866-298-6586. Mack's number for this recall is SC0379.

This recall on nhtsa.gov

February 21, 2014NHTSA 14V07800070,208 vehicles potentially affected

Electrical system

Summary
Mack Trucks, Inc. (Mack) notified the agency on February 20, 2014, that they are recalling certain model year 2010-2012 CHU, CXU, GU and TD vehicles manufactured from June 16, 2009, through July 8, 2011. 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 2013-2014 CHU, CXU, GU and TD vehicles manufactured from June 16, 2009, through July 8, 2011. Having completed its investigation, Mack once again expanded the recall during February 2015 to include an additional 53,780 vehicles from model years 2007 and 2015. The recall now covers model year 2007-2015 includes CHU, CXU, GU and TD vehicles produced October 13, 2006, through October 3, 2014. In the affected vehicles, the Electronic Power Distribution Module (EPDM) may be contaminated from water leaks in, and around, the windshield. If exposed to water leaks, contaminants such as road salts may deposit on the EPDM.
Consequence
Deposits of contaminants may result in the circuits being bridged, creating a high resistance short, increasing the risk of a fire.
Remedy
Mack has notified owners, and dealers will inspect the EPDM. If contamination has occurred, dealers will replace the EPDM and address the leak, free of charge. Owners of model year 2010-2012 CHU, CXU, GU and TD vehicles were initially notified April 24, 2014. Owners affected by the recall expansions were notified in February 2015. Owners may contact Mack Trucks at 1-336-393-2000. Mack's number for this recall is SC0375.

This recall on nhtsa.gov

October 18, 2012NHTSA 12V519000260 vehicles potentially affected

Electrical system

Summary
Mack Trucks is recalling certain model year 2008-2009 GU, LEU, and MRU trucks, manufactured from December 12, 2007, through May 8, 2008 and equipped with a certain focal mounted retarder control box. The control box may lose its electrical ground.
Consequence
If the control box loses ground, it may have localized overheating. This could lead to a vehicle fire.
Remedy
All affected vehicles were sold to one customer that has already been notified. An official owner notification letter will be mailed to the one customer in early November 2012. Mack will replace the suspect control box on the affected vehicles, free of charge. Owners may contact Mack Trucks at 1-800-866-1177.

This recall on nhtsa.gov

May 20, 2011NHTSA 11V292000771 vehicles potentially affected

Electrical system › 12V/24V/48V battery › Cables

Summary
Mack trucks is recalling certain model year 2008-2011 gu heavy trucks manufactured from September 12, 2007, through April 8, 2011, with a four battery cable design. 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 cause the insulation to become worn to a point where a short occurs.
Consequence
A short can potentially cause a vehicle fire.
Remedy
Dealers will re-route the battery cables and replace the cables if chafing has occurred. This service will be performed free of charge. The safety recall began on July 11, 2011. Owners may contact mack trucks at 1-800-866-1177.

This recall on nhtsa.gov

September 7, 2010NHTSA 10V404000369 vehicles potentially affected

Service brakes, air

Summary
Mack is recalling certain model year 2008 through 2011 gu and mru model vehicles manufactured with a front tow glad hand option. The actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard no. 121, "air brake systems."
Consequence
If the brakes do not perform as they should, a vehicle crash could occur.
Remedy
Mack will notify owners and repair the vehicle free of charge. The safety recall began on February 1, 2011. Owners may contact mack at 1-877-800-4945.

This recall on nhtsa.gov

July 23, 2008NHTSA 08V331000265 vehicles potentially affected

Exterior lighting › Headlights

Summary
Mack is recalling certain my 2009 trucks equipped with hella headlamps for failing to comply with the photometric output requirements of federal motor vehicle safety standard no. 108, 'lamps, reflective devices, and associated equipment." the headlamp's bulb shield may not have been completely seated into the headlamp's reflector.
Consequence
This standard specifies requirements for required original and replacement lamps, reflective devices, and associated equipment and their installation. The purpose is to reduce traffic crashes, deaths and injuries resulting from crashes by providing adequate illumination of the roadway, and enhancing the conspicuity of motor vehicles on the public roads so that their presence is perceived and their signals understood, both in daylight and in darkness or other conditions of reduced visibility.
Remedy
Dealers will inspect the headlamps for the suspect date codes and replace as required free of charge. The recall began on September 8, 2008. Owners may contact mack trucks at 1-800-528-6586.

This recall on nhtsa.gov

April 17, 2008NHTSA 08V17700066 vehicles potentially affected

Parking brake › Conventional › Air

Summary
Mack is recalling 66 my 2009 gu trucks equipped with bendix MV-3 dash control valves. The 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. This condition can allow the rubber double check valve to become lodged in the body opening under certain circumstances.
Consequence
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 depleting the secondary reservoir, causing reduced ability for modulating the service emergency brakes increasing the risk of a crash.
Remedy
Dealers will inspect the MV-3 dash valve for the production date code. Valves in the affected production lots will be replaced free of charge. The recall began on may 9, 2008. Owners may contact mack trucks at 1-800-528-6586.

This recall on nhtsa.gov

Owner complaints

Owners have filed 1 complaint about the 2009 Mack GU with NHTSA. Complaints are unverified reports from the public; NHTSA uses them to decide what to investigate.

Crashes reported
0
Fires reported
0
Injuries reported
0
Deaths reported
0

Most complained-about components

  1. Engine1

Other Mack GU years

Other 2009 Mack models

Most recalled 2009 vehicles

  1. 2009 Blue Bird All American (33 recalls)
  2. 2009 Blue Bird Vision (28 recalls)
  3. 2009 Ford E-350 (27 recalls)
  4. 2009 Freightliner Cascadia (24 recalls)
  5. 2009 Spartan Gladiator (23 recalls)
All of 2009’s most recalled vehicles

Questions

Does the 2009 Mack GU have any recalls?
7 recalls found in NHTSA data as of September 22, 2026, covering: exterior lighting, electrical system, service brakes, air, parking brake. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2009 Mack GU recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Mack dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2009 Mack GU?
1 complaint filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.