2004 Hummer H2: common problems and reliability
One of the worst H2 years.
One of the Hummer H2 years to avoid. All H2 years
59 owner complaints, most about electrical system. 4 recalls.
Should I buy a 2004 H2?The 2004 Hummer H2 has 59 owner-filed NHTSA complaints and 4 recalls on record. The most-reported areas are electrical system and service brakes.
Safety record for the 2004 model year
Source: NHTSA complaints and recalls filed for 2004 Hummer H2 vehicles (US, public record).
The Year Score compares this year with other H2 years only. How we score it
Is 2004 a good year for the H2?
Across the 8 H2 model years we track, complaint volume runs from 2 (2002) to 182 (2005). With 59 complaints, the 2004 H2 sits above the model's median of 25.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
Recalls affecting the 2004 H2
service brakes, hydraulic
Campaign 05V043000CERTAIN 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.
seat belts:rear/other
Campaign 05V163000ON 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.
steering
Campaign 06E010000CERTAIN 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.
service brakes, hydraulic
Campaign 04V045000CERTAIN 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.
What owners say across generations
Sentiment is deeply polarized, split between strong affection for the vehicle's character and significant frustration with its ownership costs and reliability.
Owner insights cover all generations of the H2. See the full H2 owner picture and every model year.
Other H2 model years
Compare every H2 year side by side to see how 2004 ranks against the rest.
Compare the H2 against its rivals
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