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Electrical systemPart report

2009 Hummer H3 Electrical system Problems

Complaints
34about this part
Share
49%of 69 total for the year
Median mileage
74,100miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 34 complaints about the electrical system of the 2009 Hummer H3, 49% of the 69 complaints for this model year. Where a mileage was given, the median is 74,100 miles. 4 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“At any given time the engine will not crank. I have to wait exactly 10 minutes, then it will start as if nothing was wrong. It happens hot or cold. It has been about 3 years now and starting to happen more and more often. Dealer can not find anything because the problem is to intermittent. I believe it is the security system, but that is just my thoughts.”

NHTSA complaint #10811826, filed 2015-12, 60,000 miles

“Recently my 2009 Hummer H3, has been acting strange. While driving down the road, warning lights will flash, will beep, (traction control, ABS, service 4wd, change oil, service tpm), all the while all things electrical stops working such as headlights, brake lights, blower fan, heated seat, turn signals, and all this while driving down the road at normal speed. It started doing this as the weather got colder but this H3 is well maintained and is garage kept and I only use it to drive to and from work. It is now a safety hazard and with these issues will not be able to trade it in. …”

NHTSA complaint #11387490, filed 2021-01, 198,666 miles

“We had been having problems with the AC not working as well as it used to and blamed it on the age of the vehicle. The first time we took a trip outside of town and after 1.5 hours of driving, the AC completely stopped working. We looked at the blower motor connector module and noticed discoloration and melting of a plastic wire connector. We had ordered the part to replace it when we heard the recall announced on tv. We returned the part and are waiting for the local gmc dealer to get the recall notice.”

NHTSA complaint #10734391, filed 2015-07, 141,400 miles

“My 2009 Hummer H3 on occasion will not start. It can happen any time, any where, under any weather conditions. When this happens the car radio, interior lights, etc. Are however still working. I then have to wait approx. 10 to 15 minutes, and the vehicle starts up like nothing happened.. From doing some on-line research I found out that many, many, Hummer H3 owners from years 2002 to 2009 have this same disturbing issue. I had this problem from day one when I bought this vehicle. However now it is becoming more frequent.. This occurred three times in the last week. …”

NHTSA complaint #10782910, filed 2015-10, 300 miles

“Every so often the passlock security system malfunctions and my Hummer won't start. I have to wait 10 minutes before I can start the vehicle again. It fails without warning. Its been happening more and more often. There was only 55,000 miles on the vehicle when I noticed it starting to act up. I sliced my fingers open on a job and had to drive myself to the emergency room but my Hummer wouldn't start because of the ignition security failure. I lost a lot of blood in my hand sitting waiting the 10 minutes. The doctor said I might lose the tips of my fingers because it took so long to get there. …”

NHTSA complaint #10839148, filed 2016-03, 55,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2010457%
20093449%
20083430%
20077632%
20069627%

Other parts of the 2009 Hummer H3

Visibility (wipers, defrost, mirrors)
11 complaints
Engine
9 complaints
Air bags
8 complaints
Body and structure
8 complaints
Other or unknown
7 complaints
Electronic stability control
4 complaints
Brakes
3 complaints
Fuel system
2 complaints
Suspension
2 complaints
Transmission and drivetrain
2 complaints
Engine cooling
1 complaints
Seat 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 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