2009 Hummer H3 engine problems

Filed Jan 6, 2025 · Engine · TX

The contact owns a 2009 Hummer H3. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The contact waited for a while before the vehicle started. The contact stated that the vehicle was slow to start. The contact stated that while her husband was at the store, he waited for 15 minutes before the vehicle started. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who replaced the battery and starter, but the failure recurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was unknown.

Filed May 12, 2020 · Electrical, Engine · 91,350 miles · TX

Periodically 2-3 times a year for past 6 years when driving down the high car will die, when pull over to the side of the road, car will not restart, may restart after 10 minutes or after towed to repair shop,taken to the dealer several times and several times to high end independent auto shops, no error code ever found. Read on hummer forums issue with ignition switch, replaced ignition switch and fault has not recurred.

Filed Mar 5, 2019 · Electrical, Engine · TX

Tl* the contact owns a 2009 hummer h3. The contact stated that the vehicle shut down and lost all power for ten minutes. The failure occurred without warning. The contact visited hiley buick gmc (3535 w loop 820 s, fort worth, tx 76116, (817) 349-6235), but they were not aware of the failure or how to perform the repair. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the federal safety agency. The failure mileage was unknown.

Filed Mar 28, 2018 · Brakes, Electrical · NJ

2009 hummer h3. Consumer writes in regards to several electrical problems and other vehicle issues. Consumer has previous complaint with another vehicle listed in artemis. *smd

Filed Jul 18, 2016 · Engine · 107,000 miles · FL

Tl* the contact owns a 2009 hummer h3. While the contact's son was driving approximately 60 MPH, the vehicle lost power without warning. The vehicle was pulled to the side of the road and turned off. The vehicle restarted after a couple of attempts. The vehicle was taken to a local dealer where it was diagnosed that there was engine ailure. The vehicle was not repaired. The manufacturer was made aware of the failure, but did not offer any assistance. The failure mileage was 107,000.

Filed May 11, 2016 · Engine · 53,500 miles · CO

The vehicle was purchased used @ 36954 miles. Approximately a year later (just 2 days ago) @ only 53500 miles I noticed an antifreeze smell. No visible puddle underneath. After monitoring for 1 day more popped the hood this morning and a bit of antifreeze seems to be spraying from the top of the radiator. After just googling once for "hummer h3 radiator leak" the top link leads to hummerforums.com in which is logged many many many owners going back several years up the the present having the exact same issue. Per what is described on the 52 pages dedicated to this one thread and from what I see on my own vehicle this certainly seems to be a design/engineering flaw. It seems a rare few dealerships are owning up to this "flaw" and charging a small amount if any to repair this issue while others are pleading ignorance/innocence and making the plethora of customers eat the nearly $800 dealership repair estimate. The flaw appears to be related to metal chassis parts rubbing on the plastic radiator top creating a hole and a vibratory effect weakening that plastic causing a crack.

Filed Mar 1, 2016 · Electrical, Engine · 55,000 miles · FL

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. I'm sure other people had worse situations, but I seen hundreds of people with the same vehicle having the same issue. It a dangerous issue and should be recalled before a life is lost if it hasn't already.

Filed Aug 10, 2015 · Electrical, Engine · 79,772 miles · VA

The hummer would not start, the engine did not turn, with battery in great condition, signs of faulty ignition and passive lock system.

Filed Jan 16, 2015 · Electrical, Engine · 74,100 miles · NJ

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. 12/10/2014: second service attempt: both throttle body and acc pedal position sensor tested "good". Weak battery - replace battery. 12/22/2014: third service attempt: tech replaced accelerator pedal. Relearned throttle/idle. 12/26/2014: forth service attempt: relearned throttle/idle procedure. 01/13/2015: fifth service attempt: reprogram and apply 6 updates to ECM. 01/14/2015: code thrown again: dealership advising to replace throttle body (but uncertain that this will fix the problem)?

Filed Mar 19, 2012 · Engine · 49,000 miles · FL

At approximately 49,000 mile mark, vehicle started to make unusual engine noise ie. Groan, clicking, usually between 10-20mph, would disappear,then returned between 30-40mph and disappear again at higher speeds. Took the vehicle in a total of four times to dealer. First time, they said it was the front brakes/rotors, cost $120. Noise still there. Second time, they said it was the front shocks (covered by warranty but part not in stock have to rtn a third time). Third time, they replaced front shocks(covered by warranty), noise still there. Forth time, stated it was the engine mounts and two heat shield (also covered by warranty). Noise is still there but very faint if you listen closely. Dealer says they cant do anything else and agree noise is not suppose to be there. Will wait another few months until vehicle is due to be rtn at end of lease term. Thank goodness.