2006 Hummer H2 Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 9%of 22 total for the year
- Median mileage
- 30,250miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2006 Hummer H2, 9% of the 22 complaints for this model year. Where a mileage was given, the median is 30,250 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.
“I purchased a 2006 Hummer H2 at cerritos Hummer. I currently have almost 55,000 miles. Today I was parking my car and noticed the steering was extremely hard to turn. Also the brakes were really weak. I used all the energy I had to get into a gas station driveway. I drove about 1 block because I needed gas where I noticed oil dropping under the car. I checked under the hood and the oil was coming out near the power steering pump. I opened the power steering reservoir and saw that there was very little oil because it had dropped under my car. …”
NHTSA complaint #10279740, filed 2009-08, 54,500 miles“Brakes are very noisy (squeaking) dealer grinded down brake pads and removed and sanded the rotors. Still have squeak not as bad. Very concerned on brake issue and jimmy rig fix at 6000 miles”
NHTSA complaint #10168416, filed 2006-09, 6,000 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…
- 10183782Oct 23, 2020The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
Transmission and drivetrain: other model years
Other parts of the 2006 Hummer H2
4 complaintsElectrical system
4 complaintsSuspension
4 complaintsEngine
3 complaintsSteering
3 complaintsAir bags
2 complaintsEngine cooling
2 complaintsOther or unknown
2 complaintsSeats
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsEquipment
1 complaintsFuel system
1 complaints
← All problems reported for the 2006 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