IllustrationRADIATOR END TANK RUPTURED RELEASING COOLANT ON EVERYTHING UNDER THE HOOD AND GETTING ON THE WINDSHIELD. RESEARCH OF THIS FINDS THAT THERE IS A DEFECT IN THE DESIGN OF THE FACTORY RADIATOR WHICH GM REFUSES TO TAKE ACTION ON. HAD THIS HAPPENED AT HIGHER SPEEDS, THIS COULD HAVE BEEN A MUCH WORSE SITUATION. *TR
2008 Hummer H3
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2008 Hummer H3 do not stand out strongly from the model-year median of 91.
About this comparison →How this year compares
Owner complaints by model year
Compare all H3 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
110–25K
1425–50K
1650–75K
2075–100K
20100–150K
6150K+
87 reports with mileage · 26 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 34 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
3 crash reports6 fire reports5 injury reports
Electrical System complaints
34 reportsI LOOKED ON THE INTERNET TO FIND OUT WHY MY HEATER BLOWER WAS NOT WORKING AND THERE WERE LOTS OF COMPLAINTS ABOUT THE WIRING HARNESS AND RESISTOR BURNING OUT. I CHECKED MINE AND SURE ENOUGH MINE WAS BURNT ON THE WIRING HARNESS ALL THE WAY THROUGH THE PLASTIC. GM NEEDS TO FIGURE OUT WHY IT WOULD CAUSE IT TO MALFUNCTION LIKE THAT…
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I LOOKED ON THE INTERNET TO FIND OUT WHY MY HEATER BLOWER WAS NOT WORKING AND THERE WERE LOTS OF COMPLAINTS ABOUT THE WIRING HARNESS AND RESISTOR BURNING OUT. I CHECKED MINE AND SURE ENOUGH MINE WAS BURNT ON THE WIRING HARNESS ALL THE WAY THROUGH THE PLASTIC. GM NEEDS TO FIGURE OUT WHY IT WOULD CAUSE IT TO MALFUNCTION LIKE THAT CAUSE IT COULD CAUSE A FIRE. *TR
SMELL OF BURNING PLASTIC AND THE A/C STOPPED BLOWING. THE A/C WORKS ON THE LOWER SPEEDS. BURNT/MELTED PLUG ON THE A/C RESISTOR PLUG. FROM WHAT I HAVE FOUND ONLINE THIS IS A VERY COMMON PROBLEM WITH H3'S AT ABOUT 40-60K MILES. WHY WONT GM DO A RECALL IF THIS IS A DAILY PROBLEM WITH H3 OWNERS. HOW MANY H3'S HAVE CAUGHT FIRE FROM …
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SMELL OF BURNING PLASTIC AND THE A/C STOPPED BLOWING. THE A/C WORKS ON THE LOWER SPEEDS. BURNT/MELTED PLUG ON THE A/C RESISTOR PLUG. FROM WHAT I HAVE FOUND ONLINE THIS IS A VERY COMMON PROBLEM WITH H3'S AT ABOUT 40-60K MILES. WHY WONT GM DO A RECALL IF THIS IS A DAILY PROBLEM WITH H3 OWNERS. HOW MANY H3'S HAVE CAUGHT FIRE FROM THIS ? IT WAS OVER A 110 DEGREES WHEN MINE WENT OUT. WHAT IF I HAD YOUNG CHILD OR AN ELDERLY PERSON IN THE VEHICLE AT THAT TEMP ? *TR
I WAS CUT OFF BY ANOTHER DRIVER IN RUSH HOUR TRAFFIC AND THE HORN FAILED TO OPERATE WHEN PRESSED. AFTER THIS INCIDENT, I DISCOVERED THAT THE HORN DOES NOT WORK AFTER THE VEHICLE IS DRIVEN EVERY FEW MILES! THE VEHICLE WAS IN THE SHOP FOR HOURS OF DIAGNOSIS, AND FINALLY IT WAS DISCOVERED BY THE TECHNICIAN THAT THE VEHICLE HAS A …
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I WAS CUT OFF BY ANOTHER DRIVER IN RUSH HOUR TRAFFIC AND THE HORN FAILED TO OPERATE WHEN PRESSED. AFTER THIS INCIDENT, I DISCOVERED THAT THE HORN DOES NOT WORK AFTER THE VEHICLE IS DRIVEN EVERY FEW MILES! THE VEHICLE WAS IN THE SHOP FOR HOURS OF DIAGNOSIS, AND FINALLY IT WAS DISCOVERED BY THE TECHNICIAN THAT THE VEHICLE HAS A BAD "SIR COIL". THE "SIR COIL" IS ON SPECIAL ORDER. *TR
Official recalls
215V421000 · 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
0No exact-year investigations in this snapshot.