P0100 is a generic OBD2 trouble code that indicates an issue with your Hummer H1’s Mass Air Flow (MAF) Sensor. This code is usually caused by a MAF sensor that is faulty, dirty or a wiring issue related to it. It may be tempting to replace your H1’s MAF sensor without checking the electrical system … Read more
If your Hummer H1 has washer fluid that is not coming out, it is caused by a few common issues. This article aims to give quick practical advice to help you get your wiper/washer pumping fast. Hummer H1 Washer Pump Not Working Quick Diagnosis Table Did You Hear the Washer Motor? Causes Yes No Fluid, … Read more
A mysterious noise you don’t know the source of is one of the most stressful things that can happen during vehicle ownership. If your Hummer H1 is making a sloshing sound while driving it, this is the guide for you. If your H1 makes a sound like sloshing water while driving, this is undoubtedly a … Read more
Does your Hummer H1’s air conditioning smell bad? This article will provide you with some quick and comprehensive list of causes to help eliminate your vehicle’s foul odor. This guide is broken down into three sections: AC Smell Reference Table Smell Type Potential Causes Sweet Leaking Engine Coolant, Leaking Refrigerant Mold, Mildew, Fungus Clogged Drain … Read more
P0020 is a rarely seen OBD II trouble code that can affect the Hummer H1. It’s a variable valve timing (VVT) related code, indicating a wiring issue with the bank 2 camshaft actuator “A.” P0020 is often by low or sludgy oil. Check your H1’s oil as soon as possible. P0020 is a generic code, … Read more
P0001 is a rarely seen OBD II error code. It indicates an issue with your Hummer H1’s Fuel Volume Regulator (FVR) Control System. P0001 is usually caused by a wiring problem or issue with the fuel volume regulator. The most difficult issue with diagnosing the fuel system is getting to the parts. P0001 is a … Read more
P0200 is a common OBD II error code that can occur in the Hummer H1. It indicates an issue with your vehicle’s fuel injection system. Specifically, the fuel injector circuit is out of range (in terms of voltage). Hummer H1 P0200: Quick Info Definition P0200: Injector Circuit Malfunction Frequent Symptoms Check engine light, engine misfire, … Read more
P0000 is a rare OBD2 fault code that can affect the Hummer H1. While there are over 10,000 DTC “P” codes, this is the only one reserved for “no fault detected” in your vehicle’s ECU (engine control unit) memory. It tells the scanner accessing the ECU that no codes are stored. The most common reason … Read more
If your Hummer H1 has a humming noise at high speed, it can be distracting and, depending on the cause, dangerous. We’ve outlined the most common reasons why a humming noise in your vehicle gets louder with speed. We’ve also provided an audio sample of each issue to help determine what’s causing the hum. Hummer … Read more
If your Hummer H1’s AC system is not working, it can be uncomfortable and downright dangerous on a hot day. There are A LOT of issues that can cause your vehicle’s air conditioner to fail. This article is broken down into these three sections to help save you time repairing your H1’s broken AC system: … Read more