NHTSA lists 59 complaints for the 2004 Hummer H2, 6 of them mention a crash and 1 mention a fire. 3 complaints mention an injury, with 5 injuries and 0 deaths reported.
Data build 2026-10-08.
NHTSA lists this vehicle as HUMMER H2.
At a glance
Complaints
59
With crash
6
With fire
1
With injury (complaints)
3
Injuries
5
Deaths
0
Recalls
3
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
1,359,824
Investigations
2
Open investigations
0
Manufacturer communications
748
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
Top systems
System
Complaints
Share of this vehicle's complaints
ELECTRICAL SYSTEM
14
23.7%
VISIBILITY
10
16.9%
SERVICE BRAKES
8
13.6%
SERVICE BRAKES, HYDRAULIC
6
10.2%
STEERING
6
10.2%
AIR BAGS
3
5.1%
STRUCTURE
3
5.1%
SUSPENSION
3
5.1%
VISIBILITY/WIPER
3
5.1%
ELECTRONIC STABILITY CONTROL (ESC)
2
3.4%
Top subsystems
System
Subsystem
Complaints
SUSPENSION
FRONT
3
VISIBILITY
WINDSHIELD WIPER/WASHER
3
ELECTRICAL SYSTEM
INSTRUMENT CLUSTER/PANEL
2
STEERING
LINKAGES
2
STRUCTURE
FRAME AND MEMBERS
2
VISIBILITY
REARVIEW MIRRORS/DEVICES
2
ELECTRICAL SYSTEM
IGNITION
1
ELECTRICAL SYSTEM
INSTRUMENT PANEL
1
EQUIPMENT
APPLIANCE
1
LATCHES/LOCKS/LINKAGES
HOOD
1
One complaint can name several systems, so shares can add to more than 100 percent.
Model-generated complaint tags: This model year has not been tagged.
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, AS RECOMMENDED FOR SMALL CHILDREN, DOES IMPROVE THE FIT CONDITION FOR THIS USER GRO (excerpt)
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. (excerpt)
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. (excerpt)
Date: 2005-02-08. Systems: SERVICE BRAKES, HYDRAULIC.
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. (excerpt)
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 WARNI (excerpt)
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. (excerpt)
Date: 2004-02-04. Systems: SERVICE BRAKES, HYDRAULIC.
Defect: 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: 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.
Do not drive: No. Park outside: No.
Investigations
2 investigations; 0 open.
EA05017
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 APPEARS THAT THE FRACTURES OF H2 STEERING KNUCKLES CAN BE ATTRIBUTED TO WHEEL/TIRE
Systems: SUSPENSION.
Linked campaign numbers: None listed.
PE04080
Opened: 2004-12-02. Closed: 2005-10-28.
STEERING KNUCKLE FRACTURE
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.
Systems: STEERING, SUSPENSION.
Linked campaign numbers: None listed.
Manufacturer communications
748 manufacturer communications.
Communications by system
System
Count
EQUIPMENT
251
ENGINE AND ENGINE COOLING
104
ELECTRICAL SYSTEM
95
UNKNOWN OR OTHER
56
POWER TRAIN
53
SUSPENSION
43
EQUIPMENT ADAPTIVE/MOBILITY
34
ENGINE
32
11020816
Date: 2025-07-18. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
11014455
Date: 2025-02-20. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to
11012907
Date: 2024-12-18. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
11009156
Date: 2024-10-25. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester A and Vehicle Data Recorder tools, giving website address and st
11010544
Date: 2024-10-07. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
11007743
Date: 2024-09-12. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and ven
11007744
Date: 2024-09-12. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and ven
11007208
Date: 2024-09-06. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician s
11006621
Date: 2024-08-26. Type: Service Campaign. Systems: ELECTRICAL SYSTEM.
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is com
11004557
Date: 2024-06-17. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
Notes on this record
Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.