2003 Hummer H2 Transmission and drivetrain Problems
- Complaints
- 11about this part
- Share
- 8%of 141 total for the year
- Median mileage
- 61,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the transmission and drivetrain of the 2003 Hummer H2, 8% of the 141 complaints for this model year. Where a mileage was given, the median is 61,500 miles. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“A squeaking sound from the front, left wheel are on my Hummer H2 LED me to visit the local dealership. After the first 2 visits, the squeak was still present. On the third visit they replaced the hub assembly.”
NHTSA complaint #10102437, filed 2004-12, 31,800 miles“2003 Hummer H2 transmission cooler ruptured which leaked transmission fluid into engine coolant. Required replacement of radiator, all coolant hoses and flushing both the transmission fluid and engine coolant. Cost was $1,400. Unknown if transmission was damaged from contamination of fluid.”
NHTSA complaint #10207993, filed 2007-11, 80,000 miles“Consumer was going 70 MPH and the two front tires locked, while the two back tires kept moving. Vehicle then continued to skip. The driveshaft was replaced. For the past 8 month this vehicle has been in the shop more than at the consumer's home. The vehicle has needed a new alternator, transmission, battery,ignition and drive shaft. The roof leaked and the consumer had to replace one of the side windows.”
NHTSA complaint #10103378, filed 2005-05, 24,000 miles“The contact owns a 2003 H2 Hummer. While driving 1 MPH, the front driver side wheel fractured and detached from the vehicle. The dealer informed the contact that the drive shaft and spindle were fractured and the casing behind the wheel was also fractured. The contact was awaiting repairs. The manufacturer was not notified of the failure. The current and the failure mileages were 43,000. Updated 01/10/12”
NHTSA complaint #10439963, filed 2011-12, 43,000 miles“The contact owns a 2003 Hummer H2. The contact was driving 35-40 MPH when the transmission began to slip. The contact moved from the roadway and shut off the engine. When restarting, the vehicle would not respond to lower gears. The contact was able to locate a recall for the failure (NHTSA campaign id number: 03v075000- power train: automatic transmission) but was advised by both the dealer and the manufacturer that his VIN was not included. The vehicle was not repaired. The failure and current mileage was 124,000.”
NHTSA complaint #10351454, filed 2010-08, 124,000 milesRelated recalls
- 03V075000Mar 6, 2003Certain sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 114, "theft protection." these vehicles are…Covers: Hummer H2 2003, Oldsmobile Bravada 2002–2003, GMC Envoy 2002–2003 +1 more
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Transmission and drivetrain: other model years
Other parts of the 2003 Hummer H2
52 complaintsElectrical system
24 complaintsBrakes
18 complaintsSteering
17 complaintsBody and structure
13 complaintsSuspension
11 complaintsEngine cooling
5 complaintsSeats
5 complaintsWheels
5 complaintsEngine
4 complaintsVehicle speed control
3 complaintsFuel system
2 complaints
← All problems reported for the 2003 Hummer H2
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology