The 2005 Hummer H2 has 2 NHTSA recall campaigns affecting an estimated 1,437,235 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 103 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
Recall campaigns
SEAT BELTS05V1630002005-04-221,359,824 affected
Defect
ON CERTAIN CREW CAB PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE 2ND ROW CENTER OCCUPANT SEAT BELT ROUTING MAY MAKE IT DIFFICULT TO POSITION THE LAP PORTION OF THE SAFETY BELT LOW AROUND THE HIPS OF OCCUPANTS, ESPECIALLY SMALLER OCCUPANTS, SEATED IN THIS POSITION. APPROPRIATE USE OF A CHILD SEAT OR BOOSTER SEAT,…
Consequence
A LAP PORTION OF THE SEAT BELT ROUTING THAT IS NOT LOW AND SNUG ON THE HIPS CAN ALLOW THE LAP BELT TO RIDE UP ON AN OCCUPANT'S ABDOMEN INSTEAD OF FITTING LOW AROUND THEIR HIPBONES, AND THEREFORE, CAN EXPOSE THEM TO MORE RISK OF ABDOMINAL AND INTERNAL ORGAN INJURY.
Remedy
DEALERS WILL CUT OPEN THE GUIDE LOOP, REMOVE A PORTION OF THE LOOP, AND THEN THE REMAINING TWO SIDES SHOULD BE FOLDED OVER AND SECURED WITH A RETAINER FREE OF CHARGE. THE RECALL BEGAN ON JULY 21, 2005. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, OR HUMMER AT…
SERVICE BRAKES, HYDRAULIC05V0430002005-02-0877,411 affected
Defect
CERTAIN TRUCKS, SPORT UTILITY VEHICLES, AND VANS EQUIPPED WITH BOSCH HYDRO-BOOST BRAKE ASSEMBLIES, THE HYDRAULIC BRAKE BOOSTER PRESSURE ACCUMULATOR MAY CRACK AND SEPARATE FROM THE HYDRO-BOOST ASSEMBLY DURING NORMAL OPERATING CONDITIONS.
Consequence
IF A SEPARATION OCCURRED AND THE HOOD OF THE VEHICLE WERE OPEN, FRAGMENTS FROM THE ACCUMULATOR COULD CAUSE INJURY TO PEOPLE IN THE IMMEDIATE AREA. THE PRESENCE OF THIS CRACK OR FRACTURED SURFACE COULD ALLOW THE HYDRAULIC FLUID TO LEAK FROM THE ACCUMULATOR CIRCUIT OF THE BOOSTER ASSEMBLY. THE LOSS OF FLUID WOULD…
Remedy
DEALERS WILL TEST THE HYDRO-BOOST ASSEMBLY FOR FUNCTIONAL OPERATION OF THE TWO-FUNCTION VALVE. IF THE HYDRO-BOOST ASSEMBLY FAILS THE TEST, DEALERS WILL REPLACE THE ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON MARCH 23, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC TRUCKS AT 1-866-996-9463 AND HUMMER…
Complaints by component
ELECTRICAL SYSTEM
23
1fires2injuries
AIR BAGS
11
1crashes
SERVICE BRAKES
6
STEERING
5
1crashes
VISIBILITY
5
VISIBILITY:WINDSHIELD WIPER/WASHER
5
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
4
ENGINE
4
1injuries
SERVICE BRAKES, HYDRAULIC
4
VISIBILITY/WIPER
4
1fires
Total complaints103
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The contact owns a 2005 hummer h2. The contact stated that while the vehicle was parked, fluid started to leak from the steering wheel. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 140,000.”
“The contact owns a 2005 hummer h2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an…”
“The contact owns a 2005 hummer h2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an…”
“The contact owns a 2005 hummer h2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an…”
“The contact owns a 2005 hummer h2. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed, and the brakes made a whistling sound. The contact, an independent mechanic, diagnosed that the brake booster needed to be replaced. The vehicle was not repaired. The…”
“While traveling on the main roads the speedometer intermittently malfunctions then drops to zero, whereas I'm literally unable to determine my speed this seems to occur when the engine warms up and I been driving for better than a half hour.”
“While traveling on the main roads the speedometer intermittently malfunctions then drops to zero, whereas I'm literally unable to determine my speed this seems to occur when the engine warms up and I been driving for better than a half hour.”
“Tl* the contact owns a 2005 hummer h2. The contact stated that while driving the vehicle, the power steering failed, causing the steering wheel to become very difficult to turn in either direction. Additionally, the power steering fluid leaked unto the hydro-boost braking system, causing the…”
Defect investigations
InvestigationEA05017 Opened 2005-10-28 · closed 2007-04-30
HUMMER H2 STEERING KNUCKLE FAILURES
ODI UPGRADED THIS INVESTIGATION AT THE CONCLUSION OF PE04-080.THE ALLEGED DEFECT INVOLVES THE FAILURE OF THE STEERING KNUCKLE AT THE LOWER BALL JOINT BOSS, RESULTING IN A SEPARATION OF THE LOWER BALL JOINT FROM THE KNUCKLE.A LOWER BALL JOINT SEPARATION COULD RESULT IN A LOSS OF STEERING AND/OR A DISABLED VEHICLE. IT…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2005 Hummer H2 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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