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2008 Mack GU recalls

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

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

For the 2008 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.

2008 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

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

October 11, 2007NHTSA 07V47800061 vehicles potentially affected

Exterior lighting

Summary
On certain trucks, the daytime running lights (drl) module may contain a suspect metal-oxide-semiconductor field effect transistor (mosfet) that could overheat.
Consequence
If the transistor overheats, it could possibly result in a vehicle fire.
Remedy
Dealers will replace the suspect drl module free of charge. The recall began on October 31, 2007. Owners may contact mack trucks at 1-800-528-6586.

This recall on nhtsa.gov

August 15, 2007NHTSA 07V36100021,847 vehicles potentially affected

Service brakes, air › Supply › Check valve

Summary
On certain trucks equipped with parker single check valves (scv) provided by bendix. The defect exists in the parker scv that connects with the supply port of the SR-7 spring brake modulating valve. After prolonged use of the parker scv, the valve body retainer may become excessively worn and eventually break apart. Pieces of the parker scv can become lodged inside the SR-7 spring brake modulating valve, potentially causing either leakage out of the SR-7 valve or preventing air from properly exhausting from the SR-7 valve.
Consequence
This condition can cause a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button. These conditions can occur without warning, leading to unintended vehicle rollaway, brake drag, or in the case of loss of primary circuit, inability to modulate the spring brakes.
Remedy
Mack is working with bendix to replace the parker single check valve. The recall began on January 9, 2008. Owners may contact bendix at 1-440-329-9000 or mack at 1-800-528-6586.

This recall on nhtsa.gov

August 15, 2007NHTSA 07V36000018,805 vehicles potentially affected

Parking brake

Summary
On certain trucks equipped with bendix SR-7 spring brake modulating valves, the internal rubber check valve may leak causing a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button.
Consequence
This could delay or failure in applying the parking brakes which could result in a vehicle roll away, increasing the risk of a crash.
Remedy
Mack is working with bendix to repair these vehicles (please see 07E037). Bendix will install a check valve repair kit for the affected SR-7 spring brake modulating valve free of charge. The recall began on January 10, 2008. Owners may contact bendix at 1-440-329-9000 or mack at 1-800-528-6586.

This recall on nhtsa.gov

July 24, 2007NHTSA 07V3220001,072 vehicles potentially affected

Steering

Summary
On certain trucks, the nut used to retain the steering shaft may or may not be a lock nut that has the locking feature. A lock nut is required to provide additional resistance to ensure that the nut does not come loose.
Consequence
If the nut were to come loose and be left untreated, the steering shaft could potentially separate increasing the risk of a crash.
Remedy
Dealers will replace the steering shaft pinch bolts and locknuts free of charge. The recall began on August 24, 2007. Owners may contact mack trucks at 1-800-528-6586.

This recall on nhtsa.gov

March 14, 2007NHTSA 07V0980003,587 vehicles potentially affected

Service brakes, hydraulic › Pedals and linkages

Summary
On certain trucks, the cotter pin that retains the brake pedal clevis pin may not have been installed. The clevis pin connects the brake pedal to the brake foot valve.
Consequence
If the pin were to come loose, the driver would not be able to apply the service brake, which could result in a crash.
Remedy
Dealers will inspect to see if the cotter pin is missing. If the pin is missing, the cotter pin will be installed. Owners are being advised not the drive the vehicle until the pin has been installed. The recall began on March 26, 2007. Owner may contact mack truck at 1-800-528-6586.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2008 Mack GU were found in NHTSA’s complaint data.

Other Mack GU years

Other 2008 Mack models

Most recalled 2008 vehicles

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All of 2008’s most recalled vehicles

Questions

Does the 2008 Mack GU have any recalls?
9 recalls found in NHTSA data as of September 22, 2026, covering: exterior lighting, electrical system, service brakes, air, parking brake, steering, service brakes, hydraulic. 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 2008 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 2008 Mack GU?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.