Illustration2004 H2 HUMMER, SPEEDOMETER MALFUNCTION, REGISTERS 0 (ZERO) OR GROSSLY INCORRECT MILES/HOUR, PLEASE TELL ME THIS HAS TO BE A MANUFACTURER DEFECT ON THIS TYPE VEHICLE AT $40,000 PRICE TAG, WAS PULLED OVER BY OFFICER AND GIVEN VERBAL WARNING TO GET REPAIRED. *TR
2004 Hummer H2
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all H2 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
80–25K
925–50K
1150–75K
875–100K
8100–150K
6150K+
50 reports with mileage · 9 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 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
6 crash reports1 fire reports3 injury reports
Electrical System complaints
14 reportsI OWN A 2004 HUMMER H2. IT CURRENTLY HAS 50K MILES ON IT AND HAS BEEN GARAGE KEPT AND WELL MAINTAINED SINCE I PURCHASED IT. RECENTLY, WHILE DRIVING I NOTED THAT MY SPEEDOMETER SEEMED TO BE INACCURATE. I WAS ON A MAJOR HIGHWAY, YET CARS WERE FLYING AROUND ME AND CUTTING ME OFF. I LOOKED AT MY SPEEDOMETER AGAIN AND IT READ "65" SO…
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I OWN A 2004 HUMMER H2. IT CURRENTLY HAS 50K MILES ON IT AND HAS BEEN GARAGE KEPT AND WELL MAINTAINED SINCE I PURCHASED IT. RECENTLY, WHILE DRIVING I NOTED THAT MY SPEEDOMETER SEEMED TO BE INACCURATE. I WAS ON A MAJOR HIGHWAY, YET CARS WERE FLYING AROUND ME AND CUTTING ME OFF. I LOOKED AT MY SPEEDOMETER AGAIN AND IT READ "65" SO I CONTINUED ABOUT MY BUSINESS WHILE OTHER MOTORISTS WERE STILL PASSING ME BY AND CUTTING ME OFF. WHEN I GOT HOME AND PULLED THE H2 INTO THE GARAGE, I REALIZED THE SPEEDOMETER WAS STILL READING "65" AND I WAS PARKED. I CONTACTED HUMMER AND GM WHO BOTH INFORMED ME IT IS THE STEPPER MOTOR AND THAT IT NEEDS TO BE REPLACED. THEY ALSO STATED THAT IT IS A PROBLEM IN 2003-2004 GM PRODUCTS AND THAT THERE IS A RECALL BUT NOT FOR THE HUMMER. I ASKED WHY ALL THE OTHER GM PRODUCTS WERE COVERED AND NOT MINE AND WAS TOLD THAT THEY JUST DON'T FIX ENOUGH OF THEM SO THERE IS NO RECALL. I EXPRESSED MY CONCERN THAT THIS IS NOT A NORMAL WEAR AND TEAR ITEM AND THAT THIS IS A SAFETY ISSUE. GM OBVIOUSLY FELT IT WAS ENOUGH OF A CONCERN TO RECALL ITS OTHER GMC SUV'S THAT HAVE THE SAME PROBLEM. THE SERVICE MANAGER AT HUMMER TOLD ME THAT HE FIXES ABOUT ONE A WEEK AT THE COST OF $500-$700.00. IF THAT MANY HUMMERS ARE BEING REPAIRED, WHY THE PREJUDICE AGAINST THIS GM PRODUCT FOR THE RECALL. I GUESS THEY FIGURE IF YOU OWN A HUMMER, THEN YOU HAVE THE MONEY TO PAY FOR IT TO GET REPAIRED. I BEG TO DIFFER. THIS IS A MAJOR SAFETY CONCERN AND IN DOING MY RESEARCH ON OTHER HUMMER H2'S FROM 2003-2004, IT IS A BIG PROBLEM WITH THE STEEPER MOTOR. THE SERVICE MANAGER ACTUALLY RECOMMENDED TO ME THAT I CAN "STILL DRIVE IT". I HAVE 4 CHILDREN AND DRIVING IT UNDER THESE CONDITIONS IS NOT ACCEPTABLE, NOR IS RISKING OUR LIVES, BUT THEN AGAIN, I AM CERTAIN IF SOMEONE DIED AS A RESULT OF THIS PROBLEM, GM WOULD ADDRESS IT AND RECALL THE DEFECT. THE GM PRODUCT LINE THAT HAS BEEN RECALLED USES THE SAME EXACT PART THAT THE HUMMER H2 DOES SO WHY HAS THIS NOT BEEN ADDRESSED! *TR
2004 HUMMER H2 SPEEDOMETER QUIT FUNCTIONING COMPLETELY THE STARTED WORKING AGAIN BUT VERY ERRATICALLY, READING IMPROPER SPEEDS AT ALL SPEEDS INCLUDING REGISTERING 60 MPH WHILE AT A STOP. PROBLEM HAS BEEN OCCURRING SINCE 10/15/06. NOT A SAFE SITUATION. *NM
WHILE DRIVING 10 MPH VEHICLE STALLED WITHOUT WARNING. DRIVER TRIED TO RESTART THE VEHICLE AND WAS ABLE TO DO SO. VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION, AND MECHANIC DETERMINED THAT THE IGNITION SWITCH NEEDED TO BE REPLACED, AND REPLACED IT. *AK
Official recalls
305V163000 · Seat Belts:rear/other
Apr 22, 2005
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, AS RECOMMENDED FOR SMALL CHILDREN, DOES IMPROVE THE FIT CONDITION FOR THIS USER GROUP. IN ADDITION TO INSTRUCTIONS ON PROPER INFANT AND YOUNG CHILD RESTRAINT (WITH CHILD SEATS OR BOOSTERS), SPECIAL VERBIAGE FOR RESTRAINING OLDER CHILD IS INCLUDED IN THE OWNER'S MANUAL. ALSO, THE SUGGESTED SEAT BELT FIT/ROUTING FOR ADULTS, IRRESPECTIVE OF SEATING POSITION, IS DESCRIBED IN THE OWNER'S MANUAL TEXT.
Consequence & remedy
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 1-800-732-5493.
05V043000 · Service Brakes, Hydraulic
Feb 8, 2005
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 & remedy
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 CAUSE INCREASED STEERING AND BRAKING EFFORT AND A CRASH MAY OCCUR WITHOUT PRIOR WARNING.
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 AT 1-800-732-5493.
04V045000 · Service Brakes, Hydraulic
Feb 4, 2004
CERTAIN SPORT UTILITY VEHICLES, PICKUP TRUCKS, AND PASSENGER VANS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 135, ?PASSENGER CAR BRAKE SYSTEMS.? SOME OF THESE VEHICLES WERE PRODUCED WITH AN OUT-OF-SPECIFICATION BRAKE HYDRO-BOOST HOUSING RELIEF VALVE BORE.
Consequence & remedy
Consequence: CONSEQUENTLY, THE VALVE O-RING SEAL MAY FRACTURE. STEERING EFFORTS MAY BE SLIGHTLY INCREASED WHILE BRAKING OR PARKING. UNDER CERTAIN DRIVING CONDITIONS, A FRACTURED SEAL MAY REQUIRE A SLIGHT INCREASE IN THE APPLIED BRAKE PEDAL EFFORT TO ACHIEVE THE SAME VEHICLE DECELERATION RATE AS PRIOR TO THE SEAT FRACTURE.
Remedy: DEALERS ARE TO REPLACE THE HYDRO-BOOST RELIEF VALVE. THE RECALL BEGAN ON JUNE 18, 2004. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2339; CHEVROLET AT 1-800-630-2438; GMC AT 1-866-996-9463; OR HUMMER AT 1-866-486-6376.
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
2EA05017 · Hummer H2 Steering Knuckle Failures
Opened Oct 28, 2005 · Closed Apr 30, 2007
Status: closed (inferred from source dates) · Suspension:front:control Arm:lower Ball Joint
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 APPEARS THAT THE FRACTURES OF H2 STEERING KNUCKLES CAN BE ATTRIBUTED TO WHEEL/TIRE COLLISION FORCES BEING TRANSFERRED DIRECTLY TO THE STEERING KNUCKLE.THE ORIGINAL KNUCKLE DESIGN APPEARS TO BE SUFFICIENT FOR THE H2 APPLICATION.EVIDENCE FROM INSPECTED VEHICLES, PHOTOGRAPHS, POLICE REPORTS AND EDR DATA INDICATES COLLISION IMPACT EVENTS PLACED STRESS ON THE STEERING KNUCKLE CAUSING IT TO FRACTURE.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS WITH REGARD TO THE SUBJECT COMPONENT.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION ON THIS ISSUE IF WARRANTED.
PE04080 · Steering Knuckle Fracture
Opened Dec 2, 2004 · Closed Oct 28, 2005
Status: closed (inferred from source dates) · Steering:linkages:tie Rod Assembly; Suspension:front; Suspension:front:control Arm:lower Ball Joint
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Additional source detail variants (3)
Steering:linkages:tie Rod Assembly
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Suspension:front:control Arm:lower Ball Joint
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Suspension:front
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.