2008 Hummer H3: won't start

Filed Jul 1, 2021 · GA

Vehicle will not crank. After 10-12 minute wait vehicle cranks. According to symbol this is an anti-theft lockdown. But it happens repeatedly for no reason. Has happened 5 times in 6 days. My concern is this could happen during an emergency or in a dangerous place for a woman alone (dark deserted parking lot for instance). For this reason I am very conscious of where I park, but the 1st time it happened, with no warning, was terrifying. From what I have read even replacing the ignition does not solve the issue permanently, the same thing begins to happen again.

Filed May 9, 2021 · Engine, Fuel system · 100,000 miles · CO

The antilock safety is preventing me from starting my vehicle. When it does start, and I go to an intersection to turn the truck will then stall out. It can cause a wreck. It is a huge safety issue, time consuming, and money consuming when I have to wait 10 minutes to try to start my truck, or it doesn't start, I have to replace it for $450+ which I don't have to replace the ignition switch and it's dangerous because if it does let it start I have to be careful because it will stall out on any given second causing a catastrophe!!! There are multiple people with the same issues on their vehicles. Gm should be responsible to do a recall and fix this problem.

Filed Sep 29, 2017 · Electrical · 84,000 miles · AZ

My hummer was parked in my garage and would not start. There was a clicking noise when I turned the key. I called aaa thinking it was a dead battery. They came out, got in the car and it started right up. They tested all electrical and found no issues. The battery is less than 2 years old. A few weeks later, I drove a short distance, parked and turned off my hummer. Less than 1 minute later, I got in and it would not start. This time, no clicking noise, nothing. I waited a few minutes, since I remembered that it started up the last time this happened. A few tries and about 10 minutes later, the hummer started. I immediately drove it to my mechanic for a complete diagnostic check-cost $110.00. Everything checked out fine, and they could not replicate the problem. I have looked online and found hundreds of complaints from people with the same exact problem. And there seems to be no fix. Gm refuses to do anything about it. I have had an issue almost from day one with the key fob setting off the alarm when I try to unlock the vehicle. The horn blows, but not strongly like it would if the car is being broken into. It's a very weak honk, and it will not stop until the door is unlocked and the key inserted into the ignition and the vehicle is started. My dealer said there was nothing they could do about this and suggested it might be the fob battery. It's not, it does it with new batteries installed. The consensus of readers online is that this not starting issue is a flaw in the anti-theft system. The vehicle thinks it's being stolen and therefore will not start. I also believe this is the case, based on the problems I've had with the key fob. Getting stuck someplace is not only annoying, but can be dangerous. I live in arizona with temps in excess of 110 during the summer. Likewise for people this happens to in areas of frigid cold and snow.

Filed Jan 18, 2017 · Electrical · 103 miles · PA

It started one morning I went to start my vehicle and it wouldn't start I was getting a (no crank no start).I tested the battery that had been replaced only months before and the battery was fine, I then proceeded to check my ignition and starter fuses and relays all were replaced. I noticed I had a dash light on that was a car symbol not ever dealing with it I talked to a garage and was told it was the anti theft pass lock system and that I could check by letting the key on for 10 mins then when the light goes out start it worked as they said. They suggested I replace the lock assemble which included the lock housing,key cylinder,and pass lock module.I got the parts from my local dealer and had them replaced and re learned car worked fine no light any more for about 4 months. At that time I was driving with my family down the highway and the vehicle shut off during driving I got it to the side of the road an immediately turned my key off and tried starting it again when I did so I noticed that stupid red dash light shaped like a car waited the 10 mins as did before and started right up took it right home now the same thing but it just blinks and will not go off anymore. This is a very serious problem not starting somewhere is one thing that's bad enough but to have it shut off completely when driving is scary. I have maintained this vehicle regularly and I'm finding out that their are multiply people having the same issue with their vehicles not only hummer's but most gm products.

Filed Jun 3, 2016 · Electrical, Engine · 107,000 miles · FL

The security lock system on my hummer h3 intermittently flashes during start causing the vehicle to not crank. Normally I have to wait 10 to 20 minutes for the system to reset itself and she starts right up, but today it's been 8 hours. Finally I had to call for a tow to the gm dealership. We got lucky today. At 10am my wife thought she was going into labor, we get to the truck and no start. Just a flashing security lock symbol flashing at me. Ended up using her car. This is definitely a safety concern, what if her water had broke or my son was needing medical attention. I know gm knows of this defect because I have read thousands of complaints about this exact problem online. They will not fix it unless made to.

Filed Apr 13, 2016 · 83,000 miles · PA

The anti-theft system activates on its own. Several times in the past two months when I go to start my vehicle it will not start because it thinks its being stolen. I have purchased a new key and also switched key fobs. I can park the car in the garage in the morning and at 5pm when leaving work go to start it and nothing. All the dash lights come on but, it will not start.

Filed Apr 24, 2014 · Electrical · 52,000 miles · PA

Tl* the contact owns a 2008 hummer h3. The contact stated that the engine would not start. The contact indicated that the problem was intermittent and that the security sensor light illuminated. The failure mileage was 52,000.