RecallRepo

2010 Mack Gu Recalls

Recalls on record Updated July 2026

The 2010 Mack Gu has 4 NHTSA recall campaigns affecting an estimated 115,395 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 2 complaints with NHTSA, most often about the engine. Last updated July 5, 2026.

Recall campaigns

EXTERIOR LIGHTING 14V208000 2014-04-18 44,047 affected
Defect

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…

ELECTRICAL SYSTEM 14V078000 2014-02-21 70,208 affected
Defect

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…

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…

ELECTRICAL SYSTEM 11V292000 2011-05-20 771 affected
Defect

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…

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.

SERVICE BRAKES, AIR 10V404000 2010-09-07 369 affected
Defect

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.

Complaints by component

ENGINE
1
VEHICLE SPEED CONTROL
1
Total complaints2

What owners report

Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.

“Tl* the contact owns a 2010 mack truck gu712. The driver was traveling 30 mph and attempted to decelerate when the vehicle suddenly accelerated. The driver was able to apply the brakes and maintain control of the vehicle. The engine rpms increased 12000-17000, and continued to increase when the…”

VEHICLE SPEED CONTROL · reported 2014-03-03

“Tl* the contact owns a 2010 mack truck gu712. The driver was traveling 30 mph and attempted to decelerate when the vehicle suddenly accelerated. The driver was able to apply the brakes and maintain control of the vehicle. The engine rpms increased 12000-17000, and continued to increase when the…”

ENGINE · reported 2014-03-03
Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2010 Mack Gu as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.