Is the 2004 Hummer H2 reliable?

There isn't enough NHTSA complaint data on file yet to give this model year a verdict.

What are the most common problems with the 2004 Hummer H2?

The most-reported component is electrical system, accounting for 24% of complaints on file.

How many recalls does the 2004 Hummer H2 have?

4 recalls on file for this model year.

2004 Hummer H2

○ Not enough data

2004 Hummer H2
RENDERED 2026-11-01T13:34:00.460Z

Not enough comparison years on file yet for a fair verdict.

This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.

How is this computed?

Complaints: 59
Recalls: 4
Investigations: 2
Top problem: Electrical system

Complaints per year

2004: 59 complaints

View as data table

Year	Complaints
2002	2
2003	141
2004	59
2005	79
2006	22
2007	11
2008	7
2009	2

Known problem areas

Percentages can add to more than 100% — a complaint can name more than one system.

Electrical system

24% · 14 reports

Most commonly citing instrument cluster/panel and speedometer/odometer.

FIRE

Show complaint excerpts

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.

NHTSA ODI report, 2017-09-12

Also filed under Service brakes

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.

NHTSA ODI report, 2026-02-10

Service brakes

24% · 14 reports

Most commonly citing hydraulic.

CRASHFIREINJURY

Show complaint excerpts

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…

NHTSA ODI report, 2018-04-23

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.

NHTSA ODI report, 2018-02-11

Visibility

19% · 11 reports

Most commonly citing motor and windshield wiper/washer.

CRASH

Steering

10% · 6 reports

Most commonly citing tie rod assembly and arm.

CRASHINJURY

Show complaint excerpts

(1) driving in parking lot approx 10 MPH, a vehicle cut in front of me, I cut sharply to the right. (2) my vehicle would not respond back to the left resulting in collision with a concrete pole causing $9000.00 damage to my vehicle.

NHTSA ODI report, 2007-02-15

Visibility/wiper

5% · 3 reports

Safety timeline

4 recalls · 2 investigations · oldest first

To check one car, enter its VIN on the NHTSA recall page. Check a VIN →

R

2004-06-18Service brakes, hydraulic04V045000 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…

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…

Check if this car was fixed →
I
2004-12-02Preliminary evaluationClosed 2005-10-28 Steering knuckle fracture
R

2005-03-23Service brakes, hydraulic05V043000 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…

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…

Check if this car was fixed →
R

2005-07-21Seat belts05V163000 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…

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…

Check if this car was fixed →
I
2005-10-28Engineering analysisClosed 2007-04-30 Hummer H2 steering knuckle failures
R

Date not on fileSteering06E010000 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.

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.

Check if this car was fixed →

Buy-smart checklist

2004 Hummer H2 — pre-purchase inspection

Inspect

Electrical system: 14 reports on file for this year.
Service brakes: 14 reports on file for this year.
Visibility: 11 reports on file for this year.

Verify these recalls were completed

Recall 06E010000 · Steering
Recall 04V045000 · Service brakes, hydraulic
Recall 05V043000 · Service brakes, hydraulic
Recall 05V163000 · Seat belts

FAQ

Is the 2004 Hummer H2 reliable?: There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2004 Hummer H2?: The most-reported component is electrical system, accounting for 24% of complaints on file.
How many recalls does the 2004 Hummer H2 have?: 4 recalls on file for this model year.

Data updated 2026-10-31 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.