2004 Hummer H2: problems, recalls and reliability
4 recalls and 59 owner complaints on record; the weakest area is visibility (17% of complaints); the 2006 model year looks more trouble-free.
Data updated weekly · latest recall Feb 2006
All counts are reports filed with NHTSA in the United States - US market only, not worldwide totals.
Common problems
Computed from 59 owner complaints filed with NHTSA for this exact model year.
“Odometer Fraud. The contact purchased a 2004 Hummer H2. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 200,000. It was later discovered that the mileage on the Title was 210,000. Additionally, the contact stated she felt pressured to purchase the vehicle, signed the contract, and was unable to recoup the funds.”Owner report · Electrical System · Feb 2026
“Yesterday I turned off the alarm and unlocked the doors via the keypad. I opened the driver door and my wife opened the passenger rear door and the Hummer H2 started. No key in the ignition and the fob does not have a start button. I then got in the car and inserted the key and turned the key to ON then to off and the vehicle would not shut off. Only after cycling through the gears was I able to shut off the vehicle. I have now disconnected the battery to prevent another unwanted start.”Owner report · Engine · Feb 2022
“Tl* the contact owns a 2004 hummer h2. While driving approximately 25 mph, the brake pedal was depressed and traveled to the floorboard. The stopping distance was extended. While examining the vehicle, the contact noticed brake fluid leaking under the subframe. The vehicle was not diagnosed or repaired. The manufacturer was notified. The local dealer was not contacted. The failure mileage was 160,000.”Owner report · Service Brakes · Jul 2019
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“Tl* the contact owns a 2004 hummer h2 equipped with aftermarket nitto mud grappler extreme tires, size: 37/13.5/20 (na). The tires were purchased on november 28, 2018. The contact stated that the two front tires were worn more than halfway ever since they were purchased. The manufacturer was notified of the failure and stated that the tires were not designed for city driving. The tires were not replaced. The approximate vehicle failure mileage was 205,000 and the tire failure mileage was 2,000.”Owner report · Tires · Apr 2019
“Whole cluster lights up on car door locks don't work radio won't go off air bag lights on all brake lights on , this was going down a city street driving”Owner report · Electrical System · Feb 2019
“I am having a problem with my hummer 2004. The lock light comes on and my hummer will not start. This is so horrible the problem started about 3 months ago. Everytime that light comes on I have to waite 15to 25 minutes for it to start again.”Owner report · Electronic Stability Control (Esc) · Jun 2018
“Right front brake hose rubbing on wheel and cutting loss of fluid and braking effeteness was moving in driveway when it popped the mileage is 29236”Owner report · Service Brakes · Apr 2018
“Brakes lines under vehicle have excessive corrosion and have finally cracked, resulting in complete brake failure. Event did not result in accident. Vehicle has not been operated in a northern snow region nor coastal area.”Owner report · Service Brakes · Feb 2018
“My 2004 h2 has a serious rusting issue with the brake lines. On 2 separate occasions I have been driving along at approximately 30 mpg and hit the brakes only to have them go all the way to the floor. Luckily I did not an accident. In both occasions the line burst due to rust. My veh. Has 103,000.00 lightly driven. Gm needs to come out and admit they have a problem with rusting brake liens before someone gets killed”Owner report · Service Brakes · Aug 2017
“I have a 2004 hummer h2, the entire instrument panel malfunctions.. Fuel gauge, speedometer, oil gauges .keyless entry will not work,etc. Reduced engine power message appears and vehicle automatically slowly reducing speed to 15 miles per hr while driving at high speed. Air bag light will not shut off. These issues are a safety hazard and I would appreciate assitance and resulution as soon as possible. This truck has less than 75,000 miles and has been well maintained. .”Owner report · Air Bags · Sep 2016
When filing, owners marked a crash in 6 of these complaints and injuries in 5 - self-reported to NHTSA, not verified accident statistics.
Recalls - 4 campaigns
CERTAIN FABTECH AFTERMARKET REPLACEMENT PITMAN ARMS, P/NOS. FTS71000 AND FTS71001, INSTALLED FOR USE ON CERTAIN 2001-2006 GM C/K 2500 PICK UP TRUCKS AND SPORT UTILITY VEHICLES. THE PIN LOCATED INSIDE THE PITMAN ARM CAN SHEAR OFF DUE TO A REVERSE BENDING FATIGUE CONDITION, RESULTING IN A TOTAL LOSS OF STEERING CONTROL.
Remedy: FABTECH WILL NOTIFY OWNERS AND REPLACE THE PITMAN AND IDLER ARMS FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING FEBRUARY 2006. OWNERS MAY CONTACT FABTECH AT 909-597-7800.
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.
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.
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.
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.
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.
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.
How other years compare
Check your exact H2 by VIN
Recalls and equipment differ between individual vehicles. Decode your VIN to see what applies to yours.
Open VIN decoderFrequently asked questions
Is the 2004 Hummer H2 reliable?
NHTSA has 59 owner complaints and 4 recall campaigns on record for the 2004 Hummer H2. The most complained-about area is visibility (17% of complaints).
At what mileage do 2004 Hummer H2 problems usually appear?
Half of the complaints that mention mileage were filed at 70,000 miles or less.
Does the 2004 Hummer H2 have open recalls?
4 recall campaigns have been issued, the latest concerning steering. Check your specific vehicle by VIN - recall repairs are free at franchised dealers.
Source: NHTSA recall campaigns and owner complaints (public domain). Counts reflect reports on file and are not a defect rate.