2004 Hummer H2 problems, complaints & recalls
Most-reported problem areas: Service Brakes (8) · Visibility (5) · Electrical System (4)
🧭 Reliability snapshot
Compared against other Hummer H2 model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
50 NHTSA complaints that reported an odometer reading.
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (748)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2025-07-18 · PIP5601C · Service Bulletin/Repair Instructions
this pi communicates the requirement to provide a pico file to receive diagnostic assistance from tac.
Unknown Or Other 2025-02-20 · PIP5358D · Service Bulletin/Repair Instructions
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
Engine 2024-12-18 · 03-06-01-023I · Service Bulletin/Repair Instructions
this service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
Electrical System 2024-10-25 · PIP4723J · Service Bulletin/Repair Instructions
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 and vehicle data recorder tools, giving website address and ste
Engine 2024-10-07 · 03-06-01-023H · Service Bulletin/Repair Instructions
this service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
Unknown Or Other 2024-09-12 · PIT5099H · Service Bulletin/Repair Instructions
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
Showing the 6 most recent of 748 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-02-10 · Electrical System:instrument Panel:speedometer/Odometer · 210,000 mi“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 vehi…”
2022-10-10 · Seat Belts“report states my vehicle has a recall on 2nd row seatbelts.…”
2022-02-22 · 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 on then to off and the vehicle would not shut off. …”
2021-09-16 · Suspension:front:springs:leaf Spring Assembly:u-Bolt, Leaf Spring To Axle · 100,000 mi“ 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…”
2019-07-16 · Service Brakes · 160,000 mi“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 deal…”
2019-07-15 · Tires · 205,000 mi“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 no…”
2019-02-17 · Electrical System · 122,000 mi“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…”
2018-10-08 · Engine · 165,975 mi“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.…”
2018-04-23 · Service Brakes · 29,236 mi“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…”
2018-02-11 · Service Brakes · 128,000 mi“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.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.