2006 Hummer H3: sudden loss of power

Filed Mar 1, 2019 · Driver assistance, Electrical · 81,000 miles · WI

Electrical problems, either the vehicle wil no start due to the anti-theft system or I will lose all power when driving.

Filed Mar 1, 2019 · Acceleration, Body · 80,000 miles · WI

The hood cover is loose and rattles when driving. It makes me afraid as I drive the interstate everyday and it seems as if it is going to fly off. I also lose power or it fails to start due to some type of electrical issue, brakes go, steering goes and all lights on cluster light up

Filed Mar 5, 2016 · Electrical · 89,500 miles · NV

Truck will shut off while driving or not start. When driving truck and it begins to shut off, menu will say, "reduced power." then it will say, "stability system immobilized." the truck will not start up. The security icon on the dash will be lit up. After sitting and waiting for 10 mins or so, the truck will start and is able to be driven. This happens while driving on main streets, highways, back roads.. Etc.

Filed Dec 21, 2014 · Engine · 57,000 miles · MI

On several occasions the engine has loss power in traffic and slows down to 15 miles an hour. Once on the highway causing other cars to swerve to avoid rear ending us. Another in rural traffic causing other cars to go around. We are always leary when driving this vehicle. Our mechanic has looked it over on both occasions and can not find anything wrong and we have the best mechanic in town. Gm should pay a little now and recall this vehicle and fix what's wrong instead of a lot later when someone's family is killed. I bought this car for my wife to transport our grandchildren to school and after school events every time she gets in that thing I worry but because I bought it for her she is reluctant to sell. Gm please fix.

Filed Aug 1, 2014 · Engine · 19,000 miles · CA

Drove car thru car wash .pulled onto highway light came on ,loss of power, power failure .car would not go more than 2 miles a hour .pushed the gas pedal to the floor still no power.im concerned that if this happened with my grandchild in car on hwy this could be a major problem .please look into this problem [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed May 21, 2012 · Engine · 70,000 miles · FL

Tl* the contact owns a 2006 hummer h3. The contact stated that the instrument panel displayed a warning message that read 'reduced power service stabilizer system tracking failed' and the vehicle failed to accelerate beyond 40 MPH. The vehicle was taken to the dealer and was repaired. The failure continued. Both the dealer and the manufacturer were unable to further diagnose the failure. The failure and current mileages were 70,000.

Filed May 17, 2011 · Engine · 65,000 miles · VA

Loss of power, was able to drive to the local gm dealer.mechanic stated it was due to a valve seat coming loose in the head.mechanic also stated this problem was a recurring problem in this 5cyl engine.the same engine that is in the colorado pickups and is covered under warranty in the pickups but not the hummer.

Filed Dec 1, 2010 · Engine · 5,000 miles · CA

I purchased my 2006 hummer h3 in february 2006. After driving it for approximately 5k miles, the check engine light came on and the vehicle felt like it was losing power. I immediately took it to the hummer/gm dealer. I was told that the engine cylinder heads needed to be replaced and that there was a problem in the manufacturing process. I was in shock that I had that problem with a new vehicle and I requested that I get a new replacement vehicle because I did not want the "lemon" they sold me with a defective engine. I was assured I had nothing to worry about and that the vehicle would be repaired (under warranty of course) and I would not have the problem again. In november 2010, months after my warranty had expired, my vehicle had the same problem. In fact, it is at the dealer now and I still do not know how much it will cost me to repair it. The only reason it may be repaired at no cost to me is because I paid $2650 for an extended warranty from an outside company (which expires soon). However, my extended warranty company still needs to determine if it will cover the repairs. I did my research and found that many (too many) 2006 h3s have had the same problem with the engine and it is a manufacturing problem that gm is very aware of. However, despite numerous complaints, gm refuses to take care of the problem or issue any bulletin. This is a huge safety issue. If the engine misfires and my vehicle breaks down, it can easily cause an accident and/or rollover, and very well cost me my life and the lives of others. Gm needs to recall these vehicles and issue a safety bulletin, and replace all affected vehicles.

Filed Mar 23, 2010 · Engine · 60,000 miles · TX

1. During normal driving and idleing I started seeing / hearing the engine misfire and illumination of the service engine soon (ses) I would experience abrupt loss of power or surging or idle roughness. After research and dealer diagnosis we found the early hummer h3 has the same atlas l52 I-5 engine as the 04-05 chevrolet colorado. The 04-05 cheverolet colorado atlas l52 I-5 engine was given a special coverage for soft engine intake valve seats, extended the warranty to 7 years and 100,000 miles under tsb 07123 the federal safety agency # 10022722. To fix the problem the head is replaced with one with harder valve seats. The 2006 hummer h3 should also be covered by this bulletin. Gm has refused to cover my h3 with this problem even though it has the same engine simply because the federal safety agency # 10022722 does not specifically say hummer h3. My gm case # 71-805764673.

Filed Jul 17, 2006 · Engine · 2,400 miles · VA

Dt*: the contact stated the engine was misfiring causing the vehicle to lose power while driving at any speed. After losing power, the engine ran rough at the decelerated speed. The vehicle was taken to the dealership four times for this issue. The first time the dealership corrected circuit #239. The second time there was a lose terminal. The third time the #1 cylinder coil was replaced and the fourth time there was a lose wire. The vehicle is running on only four cylinders. The problem recurred again shortly after picking the vehicle up from the dealership.