2004 Hummer H2
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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These records cover every 2004 Hummer H2. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
4 recalls name the 2004 Hummer H2. Newest first.
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.
Risk and remedy
Risk
Loss of steering control could lead to a vehicle crash with potential injury or death.
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.
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…
Risk and remedy
Risk
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.
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.
Risk and remedy
Risk
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.
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.
Risk and remedy
Risk
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.
Owner complaints
59 complaints6 involved a crash1 involved a fire5 injuries
What owners report most
Latest complaints
- Electrical system › Instrument panel › Speedometer/odometer
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.
- Seat belts
Report states my vehicle has a recall on 2nd row seatbelts.
- Electrical system · Engine
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…
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.
- Suspension › Front › Springs › Leaf spring assembly › U-bolt, leaf spring to axle
The contact owns a 2004 Hummer H2.The contact stated while driving at 35MPH, the contact stated the vehicle loss of control and forward momentum to the vehicle which caused the vehicle stalled and loss motive power. The contact who is a mechanic inspected the vehicle and notice that front…
The contact owns a 2004 Hummer H2.The contact stated while driving at 35MPH, the contact stated the vehicle loss of control and forward momentum to the vehicle which caused the vehicle stalled and loss motive power. The contact who is a mechanic inspected the vehicle and notice that front differential carrier bolt had snapped was detached from the frame and connection to the engine. The vehicle was towed to the contact residence then towed later to a local dealer who inspected the vehicle diagnosed the failure the same as the contact that front differential carrier bolt was damaged and to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was at approximately 100,000. Consumer stated component that failed is the front differential to front differential carrier connection.
- Service brakes
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.
- Tires
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…
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.
- Electrical system
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
- Electrical system · Electronic stability control (esc) · Engine
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.
- Service brakes
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
- Service brakes
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.
- Electrical system · Service brakes
As I was driving on I 5 in oregon I experienced a complete failure of the electrical system and brake systems. The vehicle was on cruise control and when I disengaged it all of the safety warning light appeared on the dashboard. I pressed on the brakes and they were a complete failure also. At this…
As I was driving on I 5 in oregon I experienced a complete failure of the electrical system and brake systems. The vehicle was on cruise control and when I disengaged it all of the safety warning light appeared on the dashboard. I pressed on the brakes and they were a complete failure also. At this time the dashboard lights and controls went off and I loss power. I was able to get to the side of the road when I noticed smoke coming from under the hood. I got my daughter out of the vehicle to a safe distance and opened the hood and the main fuse relay panel was fully engulfed in fire. I called 911. In the approx. 5 min. The time the fire truck arrived the truck was consumed and fully gutted out from the fire.
- Service brakes
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
- Power train
I was driving home at night and about a mile before I got home my transmission didn't seem to shift as smooth as it usually does and when I parked in my garage I got out and transmission fluid was dripping out from under my H2 very quickly and by the next hour it had every bit run out and huge…
I was driving home at night and about a mile before I got home my transmission didn't seem to shift as smooth as it usually does and when I parked in my garage I got out and transmission fluid was dripping out from under my H2 very quickly and by the next hour it had every bit run out and huge puddle of transmission fluid was all over my garage floor. I took the skid plate off my H2 and the transmission line had a hole rusted through it. Had I been another few miles away from getting home this could have destroyed my transmission and possibly caused me to wreck.
- Air bags · Electrical system · Electronic stability control (esc)
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…
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. .
- Air bags
Check system out and sensing module that controls the inflatable restraints has internal failure and will not communicate. The sdm needs replaced
- Visibility/wiper
Gm IS recalling 13,358 my 2003 hummer H2 vehicles. Some of these vehicles have a condition in which water can enter the windshield wiper motor module. If a sufficient amount of water enters the module, over time, the front windshield wipers may work intermittently or they may become inoperative. read more at http://www.cars.com/recalls/hummer/h2/2003/#85k348wcjdlbcqxu.99
- Service brakes
I was pulling out of my driveway in my hummer H2 when the brake pedal went to the floor. I got out of my H2 and noticed a large amount of brake fluid running out from under the rear end near the left rear wheel. I looked under the vehicle and noticed a brake line was rusted in two. I checked under the hood and saw that the brake fluid reservoir was completely empty. *tr
- Electrical system · Unknown or other
I feel that this key problem falling out of the ignition, key will not turn on or off making it hard to control when the key IS in the ignition and causing it not to start. I had this same problem on a 2003 isuzu ascender. Also the "driver information center" has quit working right which controls a lot of things on the vehicle. I think it IS a defective switch from gm who also built my 2003 isuzu. *tr
- Service brakes
I was traveling on nj turnpike when my brakes didn't feel right. Almost no brakes stepping to floor. Then brake failure light came on. This IS a garage kept vehicle with approx 14000 original miles. Appears brake lines are corroded. One owner. How could this happen. IS there a recall how can I obtain details for full recovery or reimbursement? *tr
- Service brakes
TL* the contact owns a 2004 hummer H2. The contact stated that while driving approximately 35 mph, the brake pedal failed to respond when depressed repeatedly. the vehicle was driven uphill in combination of the emergency brake being engaged in an attempt to stop the vehicle. The vehicle was towed…
TL* the contact owns a 2004 hummer H2. The contact stated that while driving approximately 35 mph, the brake pedal failed to respond when depressed repeatedly. the vehicle was driven uphill in combination of the emergency brake being engaged in an attempt to stop the vehicle. The vehicle was towed to an independent mechanic where the brake power booster was replaced. In addition, the master cylinder and brake lines were replaced at different times. The manufacturer was notified of the defect. The approximate failure mileage was 71,000.
- Visibility/wiper
I have a 2004 H2 my front windshield wipers will not shut off. I had to remove the wiper fuse in order to drive my truck on a sunny day. The switch IS in the off position but they continue to stay on. I need help fast to continue to drive my truck in safe conditions. *tr
- Seats
While driving the vehicle on an extended trip on the highway, the heating element on the heated seats overheated and burned the right side below shoulder blade above waist, causing injury to my back. I went to a physician ,and now have a two large scars about 4.5 inches in length. I had the seat warmer on a trip to nebraska, and the seat burned my back. *tr
- Electrical system · Exterior lighting · Visibility/wiper
1. Voltage meter erratic 2. Windshield wipers stopped working, wipers stopped and remain in the middle of the windshield. 3. Dashboard instrument panel remained on with battery light and radio after switching off and locking vehicle. It was necessary to disconnect the battery to disable this…
1. Voltage meter erratic 2. Windshield wipers stopped working, wipers stopped and remain in the middle of the windshield. 3. Dashboard instrument panel remained on with battery light and radio after switching off and locking vehicle. It was necessary to disconnect the battery to disable this condition. On morning of 5/17/2012, we reconnected the battery and voltage meter and instrument panel was normal. Windshield wipers are still inoperable. *tr
- Electrical system
TL* the contact owns a 2004 hummer H2. The contact stated that the speedometer failed as he parked the vehicle. Contact noticed that the speedometer provided a reading of 80 mph instead of 0. On occasions, the speedometer would return to normal but would mainly read between 80-100 mph erroneously.…
TL* the contact owns a 2004 hummer H2. The contact stated that the speedometer failed as he parked the vehicle. Contact noticed that the speedometer provided a reading of 80 mph instead of 0. On occasions, the speedometer would return to normal but would mainly read between 80-100 mph erroneously. The vehicle was taken to an independent mechanic where they advised him that a motor in the speedometer failed and needed to be replaced. The vehicle was not repaired nor was the manufacturer contacted. The failure mileage was approximately 43,000. The vin was unavailable.
- Visibility
TL* the contact owns a 2004 hummer H2. the contact stated that the wiper motor for the front windshield became inoperable while the contact was driving in inclement weather, causing the contact to loss control of the vehicle and crash into a guard rail. the dealer and manufacturer were notified…
TL* the contact owns a 2004 hummer H2. the contact stated that the wiper motor for the front windshield became inoperable while the contact was driving in inclement weather, causing the contact to loss control of the vehicle and crash into a guard rail. the dealer and manufacturer were notified of the failure, but denied any assistance with repairs to the vehicle. the vehicle was not repaired. there were no injuries. a police report was not filed. the failure mileage was 70,000 and the current mileage was 80,000.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- 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…
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.
- 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.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11010544This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11009156This 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 and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
- 11007744This 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 vent temperature.
- 11007743This 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 vent temperature.
- 11007208This 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 should not use the information that is provided by the antilock braking system tire size selection.
- 11006621Vehicle 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 completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
- 11004557This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
- 11002312This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
- 11000576This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
- 10252735This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
- 10252163XM Audio Traffic And Travel Link Availability And Operation.
- 10251890This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
- 10250775This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
- 10249980This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.
- 10249579This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10249011This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
- 10248444Vehicle Recalls
- 10247780This 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 vent temperature.
- 10247681Information On Requests To Add OnStar Bluetooth Option.
- 10246952Programming And Activation Of Replacement OnStar Modules.
- 10246951Programming And Activation Of Replacement OnStar Modules.
- 10246631Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
- 10245951Canadian Customers Unable To Place Calls And Turn By Turn Inoperative In The United States.
- 10245950Canadian Customers Unable To Place Calls In The United States
- 10245395This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns.
- 10244274This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
- 10244214This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10244201This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
- 10242298This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
- 10242262This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
- 10242252This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns.
- 10240793This 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 call General Motors Technical Assistance Center for further assistance.
- 10240344This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 10237671This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
- 10236164This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
- 10235802This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10235799This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
- 10234141This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234110This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
- 10232811This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
Every Hummer H2 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.