https://plaincars.com/make/hummer-h3 New NHTSA complaints and recalls filed for the Hummer H3. en-us Sun, 18 Oct 2026 06:35:58 GMT https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2171609 Fri, 30 Jan 2026 00:00:00 GMT The fuel level sensor stopped working now it say I’m on E These go out on these cars And are on the recall list, but not on my vehicle yet https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2166292 Wed, 14 Jan 2026 00:00:00 GMT The contact owns a 2006 Hummer H3. The contact stated that the frame was rusted on the driver's side. The check engine warning light was illuminated. The contact looked underneath the vehicle and was able to see through the subframe. The contact also noticed cracks in sub frame. The contact was concerned about driving the vehicle. The vehicle was taken to an independent mechanic who determined th https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2166293 Wed, 14 Jan 2026 00:00:00 GMT The contact owns a 2006 Hummer H3. The contact stated that the frame was rusted on the driver's side. The check engine warning light was illuminated. The contact looked underneath the vehicle and was able to see through the subframe. The contact also noticed cracks in sub frame. The contact was concerned about driving the vehicle. The vehicle was taken to an independent mechanic who determined th https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2149859 Tue, 18 Nov 2025 00:00:00 GMT Was doing a frame inspection on my hummer h3. Turns out the rear left frame rail is completely rusted through. And there are parts hanging on by a thread. I have found many complaints online about rust in this exact spot( rear left frame). I believe this issue should be dealt with immediately. Someone could be killed. The car is not that old and no other car of this age and mileage has this amoun https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2147791 Tue, 11 Nov 2025 00:00:00 GMT The blower resistor and harness needs replaced it looks like it caught fire or default https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2147792 Tue, 11 Nov 2025 00:00:00 GMT The blower resistor and harness needs replaced it looks like it caught fire or default https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2124123 Tue, 26 Aug 2025 00:00:00 GMT The contact owns a 2009 Hummer H3. The contact stated that the vehicle failed to immediately start, and the security warning light illuminated. After several attempts, the vehicle was started. The contact stated that the failure was intermittent but had become more frequent. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assi https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2118796 Sat, 09 Aug 2025 00:00:00 GMT I was trying to get away from a stranger that was following me that was threatening and scary and when I got in the my Hummer h3 it wouldn't start its the ANTI THEFT that's thinking the car is being stolen this is happened several times of the car not starting i went to Google and YouTube and there's hundreds of videos complaining and giving instructions on waiting 10 min before trying to start t https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2109523 Sun, 13 Jul 2025 00:00:00 GMT The pass lock in this vehicle is faulty. On numerous occasions, it has left me unable to start the vehicle, but if you wait 10 minutes each time, it will start again, but it happens all the time. I've seen numerous complaints online and GM needs to do something about it. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2097497 Wed, 04 Jun 2025 00:00:00 GMT Odometer Fraud. The contact purchased a 2007 Hummer H3. The contact discovered that there was a mileage discrepancy. The vehicle was an independent dealer sale. At the time of purchase, the vehicle mileage was 122,791 and at the time of registration, it was discovered that the mileage was 122,799 but additional documents also showed that the mileage was unchanged over a 3-year period. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2093351 Mon, 19 May 2025 00:00:00 GMT The contact owns a 2008 Hummer H3. The contact received notification of NHTSA Campaign Number: 15V421000 (Visibility); however, the dealer refused to perform the recall repair due to the age of the vehicle. The contact stated that the dealer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact stated that the blower motor had https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2053621 Mon, 06 Jan 2025 00:00:00 GMT 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 https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2052453 Thu, 02 Jan 2025 00:00:00 GMT On the electrical, I refer to my air conditioning and heater. When I have my air selection to coldest and I drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. I have to turn it off . On the engine, after I hit 90,000 miles, I have to fill up my engine oil every 2-3 weeks because my vehicle is burning it quick or something. It doesn't leak oil at https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2052454 Thu, 02 Jan 2025 00:00:00 GMT On the electrical, I refer to my air conditioning and heater. When I have my air selection to coldest and I drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. I have to turn it off . On the engine, after I hit 90,000 miles, I have to fill up my engine oil every 2-3 weeks because my vehicle is burning it quick or something. It doesn't leak oil at https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2051336 Sat, 28 Dec 2024 00:00:00 GMT Was driving this vehicle about 45 mph and began to shake violently. Was able to get it slowed down and back under control. Happened two more times on my drive home and took it to an auto repair shop today and found the frame is broken on both sides in front of rear leaf springs. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2020141 Tue, 27 Aug 2024 00:00:00 GMT Was heading home from work and the 2006 Hummer H3 shut off while traveling in the middle of traffic was able to cruise in Nuetral until I could stop to start car again started car and yet again I receive a cylinder misfire code which has been repaired on multiple attempts still no success. I am going to end up either crashing or an emergency vehichle will be trying to get by and I can't move becau https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2018974 Fri, 23 Aug 2024 00:00:00 GMT Sunroof leaking creating water to leak into the driver seat, passenger seat, speakers on the door. Water trickling down from the Onstar system while parked and in motion this is a safety hazard. The only resolution that is given from GM is to blow out the hose to the sunroof, that’s not helping this issue is creating mole into the vehicle and once again it’s hazardous when driving As the water rai https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-2018824 Thu, 22 Aug 2024 00:00:00 GMT Engine has very bad rough idle after multiple attempts to repair will get a misfire code often that goes on and comes off engine has rough idle to the point where truck shuts off completely while waiting at traffic light. My safety is at risk as this could happen during driving causing a wreck or during a light change when the emergency vehicles need me to move over and my truck don't run. Vehicle https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1995252 Wed, 29 May 2024 00:00:00 GMT The last dealership I went to they advised to come th the dealership but when I got there nobody wasn’t trying to work there instead the said that it was going to be hard to work on it cause nobody work on those cars anymore and then they said they were going to order the part but never call me back for it. Call them but gave me the runaround basically. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1995253 Wed, 29 May 2024 00:00:00 GMT The last dealership I went to they advised to come th the dealership but when I got there nobody wasn’t trying to work there instead the said that it was going to be hard to work on it cause nobody work on those cars anymore and then they said they were going to order the part but never call me back for it. Call them but gave me the runaround basically. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1995254 Wed, 29 May 2024 00:00:00 GMT The last dealership I went to they advised to come th the dealership but when I got there nobody wasn’t trying to work there instead the said that it was going to be hard to work on it cause nobody work on those cars anymore and then they said they were going to order the part but never call me back for it. Call them but gave me the runaround basically. https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1972044 Sat, 02 Mar 2024 00:00:00 GMT My transfer case established a large fluid leak so I inspected it, the findings was a large hole in the main housing on the transfer case fluid was leaking out. The transfer case was removed and disassembled, and found that the 2 screws that hold the chain guide to the housing had backed out or fell out and let the chain guide fall down in to the gear mechanism and ground it up and broke the main https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1964401 Sun, 04 Feb 2024 00:00:00 GMT Engine was replaced at 163,000 miles now at 168,000 miles the frame is rusted beyond repair and is about to give at any moment nothing really left near rear axels. This could have definitely caused a horrible accident to myself or others having a big car just give way and collapse. Took it to mechanic who warned me first then next day took it to body shop that said nothing could be done. Basi https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1964402 Sun, 04 Feb 2024 00:00:00 GMT Engine was replaced at 163,000 miles now at 168,000 miles the frame is rusted beyond repair and is about to give at any moment nothing really left near rear axels. This could have definitely caused a horrible accident to myself or others having a big car just give way and collapse. Took it to mechanic who warned me first then next day took it to body shop that said nothing could be done. Basi https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1964403 Sun, 04 Feb 2024 00:00:00 GMT Engine was replaced at 163,000 miles now at 168,000 miles the frame is rusted beyond repair and is about to give at any moment nothing really left near rear axels. This could have definitely caused a horrible accident to myself or others having a big car just give way and collapse. Took it to mechanic who warned me first then next day took it to body shop that said nothing could be done. Basi https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1963123 Wed, 31 Jan 2024 00:00:00 GMT The problem was unknown to me and probably would be to any vehicle owner that is not a mechanic. I was driving a death trap and didn't know how easily it could have been a serious problem. The driver side leaf spring bracket had completely broke apart from the frame on the upper drive side corner in an area that without getting underneath the vehicle with a flashlight and specifically looking for https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1958877 Wed, 17 Jan 2024 00:00:00 GMT exhaust leaking in cab of the car .Exhaust bolts broke or manifold cracked problem i heard about on line .on a long trip could make you passout with the fumes .please check it out .on most inline 5 cyclinder engines GM makes .Thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1945034 Wed, 22 Nov 2023 00:00:00 GMT Frame Rust Entire frame needs replaced https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1945035 Wed, 22 Nov 2023 00:00:00 GMT Frame Rust Entire frame needs replaced https://plaincars.com/make/hummer-h3 https://plaincars.com/make/hummer-h3#complaint-1945036 Wed, 22 Nov 2023 00:00:00 GMT Frame Rust Entire frame needs replaced