One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light. Most of the time, reduced engine power doesn’t make commuting home possible since the max speed your Hummer H3 will reach is not going to be enough to keep you … Read more
Black smoke coming from your Hummer H3’s exhaust is definitely a concerning problem. Different colored exhaust can mean different things. Black smoke is typically of greater concern than white smoke. Dark black smoke coming from the exhaust of your H3 indicates that there could be a serious engine problem, and indicates that the air/fuel mixture … Read more
One of the most alarming sounds you can hear from your Hummer H3 is the engine knocking. Unfortunately, an engine knock can be a sign of significant engine problems. The first thing you should do is check your H3’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant getting into … Read more
The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Hummer H3’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your H3’s ECU. … Read more
One of the most inconvenient things that can happen to your Hummer H3 is when the speedometer stops working. You don’t realize how much you look at the thing until it’s always sitting at 0 MPH while driving down the road. If your vehicle’s speedometer is not working, it’s usually caused by an issue with … Read more
One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Hummer H3 isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. It is entirely possible for your H3’s heater to work just fine even when the air conditioner is blowing … Read more
Fuel injectors can go the life of a modern vehicle with little to no trouble at all. That being said, bad fuel injectors are one of the more common issues that happen to any vehicle (Hummer H3 included). There’s always more than one fuel injector, and even one going bad is enough to make … Read more
One of the most common problems with the Hummer H3 (or any vehicle) is when the brakes are grinding. The number one cause of grinding brakes is going to be brake pads that have worn all of their friction material off. But, there are other causes as well. Your Hummer H3 is always going … Read more
If your Hummer H3’s steering wheel is shaking, you should deal with it immediately. A shaking steering wheel in the Hummer H3 is caused by anything from the wheels and tires through the suspension (ball joints, tie rods, etc.) to the braking system. We’ll start with the easiest things to check and move towards things … Read more
One of the most common issues with the Hummer H3, or any newer GM vehicle, is the “Service StabiliTrak” warning. StabiliTrak is GM’s electronic stability control system. It does much more than a standard traction control system. It is one of the most innovative and vital safety features on your Hummer H3 and can … Read more