2005 Hummer H2 Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 5%of 79 total for the year
- Median mileage
- 29,558miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2005 Hummer H2, 5% of the 79 complaints for this model year. Where a mileage was given, the median is 29,558 miles.
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.
“While traveling on the main roads the speedometer intermittently malfunctions then drops to zero, whereas I'm literally unable to determine my speed this seems to occur when the engine warms up and I been driving for better than a half hour.”
NHTSA complaint #11415074, filed 2021-05, 41,280 miles“Transmission sticks in 3rd. Gear. Distressed engine on take off. Only switches in and out of 2nd and 3rd gear manually. Gm denies warranty on trans. States trans. Malfunction due to over stressing caused by aftermaket super charger purchased by owner.”
NHTSA complaint #10154476, filed 2006-04, 17,835 miles“2005 H2, purchased 10/2004 there is a noise that cannot be located and repaired. Sewell cadillac, dallas, texas replaced the front differential (it had metal shavings in it), replaced rear springs observing they were over extended, bubbled and warped. The car in two separate repair tickets has been in the shop 7 days each time for a total of 14 days. Is doesn't appear this problem can be found or fixed. There is a dragging noise upon acceleration between 20 - 40 MPH. It is very uncomfortable hearing this noise. My neighbor had her wheel come off of her 2003 H2. …”
NHTSA complaint #10102892, filed 2004-12, 400 miles“The contact owns a 2005 Hummer H2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an injury to his head, but medical attention was not provided. Another person on an ATV provided a jump start, but the vehicle failed to restart. The contact walked several miles to get assistance. The contact was able to view YouTube and replace the part. …”
NHTSA complaint #11676916, filed 2025-07, 111,400 milesRelated service bulletins
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10234619Apr 6, 2023This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 10222770Sep 16, 2022This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
- 10224273Sep 1, 2022This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the…
- 10200152Jun 7, 2021This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 10194079Apr 30, 2021This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10191207Mar 11, 2021This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 10178949Jul 28, 2020This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC…
Transmission and drivetrain: other model years
Other parts of the 2005 Hummer H2
27 complaintsVisibility (wipers, defrost, mirrors)
19 complaintsAir bags
12 complaintsBrakes
11 complaintsSteering
6 complaintsEngine
4 complaintsOther or unknown
3 complaintsTires
3 complaintsSeats
2 complaintsBody and structure
2 complaintsWheels
2 complaintsSuspension
1 complaints
← All problems reported for the 2005 Hummer H2
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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