2009 Hummer H3 Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 3%of 69 total for the year
- Median mileage
- 93,550miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2009 Hummer H3, 3% of the 69 complaints for this model year. Where a mileage was given, the median is 93,550 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.
“P2135 throttle/pedal position sensor/switch a/b voltage correlation that puts the vehicle into ?stabilitrak disabled , traction control disabled , and reduced engine power . While there is a TSB#11-06-04-007b regarding this issue and warranty coverage; unfortunately it does not apply to my engine. However, since this is a widely know issue, and this vehicle is experiencing the same conditions, one would think that my vehicle would be serviced under this TSB extended warranty coverage. 12/04/2014: first service attempt: clear code everything tests fine, let?s see if it happens again. …”
NHTSA complaint #10673043, filed 2015-01, 74,100 miles“Vehicle goes into reduced power modes at any highway speeds. The codes involve a throttle body, crankshaft sensor and pedal. This is extremely damgerous at highway speeds since vehicle is immobile.”
NHTSA complaint #11118823, filed 2018-08, 113,000 milesRelated service bulletins
- 11009088Sep 16, 2024This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 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…
- 10242061Aug 7, 2023This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10237846Jun 7, 2023This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air…
- 10237387May 30, 2023This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 10237659May 15, 2023This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the…
- 10234619Apr 6, 2023This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
Transmission and drivetrain: other model years
Other parts of the 2009 Hummer H3
34 complaintsVisibility (wipers, defrost, mirrors)
11 complaintsEngine
9 complaintsAir bags
8 complaintsBody and structure
8 complaintsOther or unknown
7 complaintsElectronic stability control
4 complaintsBrakes
3 complaintsFuel system
2 complaintsSuspension
2 complaintsEngine cooling
1 complaintsSeat belts
1 complaints
← All problems reported for the 2009 Hummer H3
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