It is both frustrating and unsafe to drive your Hummer H2 if the brake lights are stuck on. The most common reason that they stay on is a brake light switch that has failed. How Brake Lights Work Brake lights work by having an electric current sent to the brake pedal switch at all … Read more
One of the more common issues that can occur is a vehicle that shakes when accelerating. If your Hummer H2 is shaking when accelerating, it’s something that should not be ignored. While the vibration can be annoying, it is often indicative of a serious problem. Speed Matters Vehicle speed matters when you feel a … Read more
One of the most annoying things that you can coming from under the hood of your Hummer H2 is a ticking lifter. The ticking noise makes it sound like the engine is going to give up the ghost at any time. There are a few things that can cause a lifter to tick, such as … Read more
P0171 and P0174 both indicate that there is a lean condition present in your Hummer H2. By themselves, these are some of the most common OBD2 codes. When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more
Your Hummer H2’s clutch provides a direct connection between the engine and transmission. Without it, it can’t move at all. This connection requires a tremendous amount of pressure. This guide is intended to help you determine why your clutch is slipping on the flywheel. Note: This article is for manual cars only. Here’s the automatic … Read more
A sputtering engine can indicate a number of problems. If your Hummer H2 has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. Your H2’s engine is a giant pump. It pulls in air (where it is measured by the mass airflow … Read more
P0037 is a generic OBD II trouble code, which means that it has the same meaning for the Hummer H2 as it would for any other car or truck. Diagnosing this code is relatively straightforward. It is usually caused by a bad oxygen sensor, or a wiring issue. This code is closely related to P0031 … Read more
The single most important safety feature in your Hummer H2 is a good set of brakes. If your brake pedal is going to the floor, it indicates that there is a serious problem in the braking system. When the pedal goes to the floor, it’s usually caused by a bad master cylinder, leaking brakes, bad … Read more
One of the most common automatic transmission problems is shifting hard. If your Hummer H2 has a hard shifting transmission, it can be uncomfortable to drive and a sign of serious problems. If your vehicle’s transmission is shifting hard, it can cause a harsh ride and lead to potential damage over time. Numerous factors can … Read more
Rotors are metal discs that are visible behind the H2’s wheel. They work together with the calipers and brake pads to slow down your Hummer H2. Due to braking friction, rotors have to withstand and dissipate a tremendous amount of heat. This causes the rotor surface to be uneven making the brake pedal feel … Read more