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2007 Hummer H3

Owner reports · Recalls · Investigations

More warning signs than most H3 years

Owner complaints for the 2007 Hummer H3 are substantially higher than the model-year median of 91.

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When problems were reported

Mileage at the reported incident

192 reports with mileage · 45 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 76 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Visibility/wiper. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

12 crash reports18 fire reports13 injury reports

Fuel System, Gasoline complaints

1 reports
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77,540 miles · Feb 8, 2014
EngineFuel System, Gasoline

SMELLED RADIATOR FLUENT WHEN I PARKED INTO THE DRIVE WAY, POPPED THE HOOD AND SAW THAT THE LIQUID SPLASHED ALL OVER THE ENGINE AND PARTS AS WELL AS ON TOP OF THE PLASTIC FAN COVER, WHICH SEEMED ODD. COULDN'T FIND THE LEAK IN THE HOSE. LOOKED AT THE HUMMER FORUM THAT I'M A MEMBER OF AND LORD BEHOLD THERE WAS A BIG TOPIC OF RADIA…

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SMELLED RADIATOR FLUENT WHEN I PARKED INTO THE DRIVE WAY, POPPED THE HOOD AND SAW THAT THE LIQUID SPLASHED ALL OVER THE ENGINE AND PARTS AS WELL AS ON TOP OF THE PLASTIC FAN COVER, WHICH SEEMED ODD. COULDN'T FIND THE LEAK IN THE HOSE. LOOKED AT THE HUMMER FORUM THAT I'M A MEMBER OF AND LORD BEHOLD THERE WAS A BIG TOPIC OF RADIATORS CRACKING AND BREAKING IN THE SAME PLACES WITH THE 2007 MODELS. NO RECALL HAS BEEN ISSUED, SO NO RECALL HAS BEEN SUBMITTED. BUT IT'S A WELL KNOWN DEFECTIVE RADIATOR PROBLEM THAT GM KNOWS ABOUT BUT WON'T RECALL. SO THEY DECIDED TO MAKE A NEW RADIATOR THAT FIXES THE PROBLEM FOR THE 2007 HUMMERS. THE PROBLEM IS THE MIDDLE PIN THAT HOLDS THE RADIATOR RUBS THE NECK AND STARTS A CRACKED UNDER THE STYROFOAM, THUS THE RIGHT DRIVERS SIDE CRACKS IN THE SAME SPOT AS WELL ON THE PLASTIC SIDE. HUNDREDS OF H3 OWNERS HAD THIS HAPPEN TO THEM AND POST PICS AND WHAT NOT, BUT STILL NO RECALL. THIS PROBLEM IS ONGOING AND NOTHING IS BEING DONE. I HAVE SPOKE TO THE HUMMER CUSTOMER SERVICE AND THEY CONTACTED THE LOCAL GM AND THEY SCHEDULED MY SCHEDULED DATE TO TAKE MY H3 IN FEB 17 2014, @ 8 AM AT THE LOCAL GM DEALERSHIP AND HOPEFULLY THEY WILL FIX THIS ISSUE AND NOT CHARGED ME TO FIX DUE TO THE FACT THAT THEY KNOW THE PROBLEM AND HAVE DONE NOTHING TO FIX IT. BUT IT'S BEEN KNOW THAT THEY WILL NOT FIX THE RADIATOR AND THEY SAY IT'S DUE TO CLIMATE WHICH IS FALSE BECAUSE EVERY H3 OWNER HAS IT BREAK IN THE SAME PLACE, AND HAVE SUBMITTED COUNTLESS TICKETS. *TR

NHTSA ODI #10563465

Official recalls

2

15V421000 · Visibility:defroster/defogger/hvac System:fan/motor

Jul 1, 2015

General Motors LLC (GM) is recalling certain model year 2006-2010 Hummer H3 vehicles manufactured February 5, 2005, to May 24, 2010, and 2009-2010 Hummer H3T vehicles manufactured May 21, 2008, to May 24, 2010. In the affected vehicles, the connector module that controls the blower motor speed for the heating, ventilation and air conditioning system may overheat.

Consequence & remedy

Consequence: If the blower motor connector module overheats, it can increase the risk of a fire.

Remedy: GM will notify owners, and dealers will replace part of the blower motor connector and harness, free of charge. The recall began February 26, 2016. Owners may contact Hummer customer service at 1-800-732-5493. GM's number for this recall is 15042.

10V179000 · Structure:body:hood

Apr 30, 2010

GM IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2010 HUMMER H3 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE INTEGRAL CLIP-TABS ON THE LOUVER ON THE HOOD MAY FRACTURE, CAUSING THE HOOD LOUVER RATTLE AGAINST THE HOOD AND BECOME LOOSE. IF THIS INDICATOR IS UNNOTICED, ADDITIONAL CLIPS COULD FRACTURE AND THE HOOD LOUVER COULD DETACH FROM THE VEHICLE.

Consequence & remedy

Consequence: IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJURY AND/OR PROPERTY DAMAGE.

Remedy: DEALERS WILL APPLY AN ADHESIVE TO THE HOOD LOUVER TO SECURE IT TO THE HOOD. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 12, 2010. OWNERS MAY CONTACT HUMMER AT 800-732-5493 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.