P1174 and P1175 are GM-specific DTCs (Diagnostic Trouble Codes). They indicate fuel bank trim issues on bank 1 and bank 2 of your GMC Sonoma. GMC Sonoma P1174 + P1175 Quick Info GM P1174 + P1175 Definition Fuel Trim Cylinder Balance (Bank 1 or Bank 2) Symptoms Mild misfire, MIL light Common Causes Bad O2 … Read more
Does your GMC Sonoma have lights that come on and a clicking noise when you turn the key, but it won’t start? This article is meant to help you diagnose this exact scenario. The good news is that this is a fairly common no-start situation and is usually pretty easy to repair. A weak battery … Read more
If you find yourself in a situation where only one of GMC Sonoma’s windshield wipers is working, there’s a lot you can do to get it fixed at home. We know that when only one windshield wiper is working, your Sonoma’s windshield wiper motor is still functional. So we don’t need to check the windshield … Read more
A functioning horn is one of a vehicle’s most critical safety features. If your GMC Sonoma’s horn isn’t working, there are a few potential causes. We’ll cover each of them, starting with the easiest and most likely issues and working from there. A test light can make diagnosing a horn that isn’t working much easier. … Read more
If your GMC Sonoma’s steering wheel is shaking, you should deal with it immediately. A shaking steering wheel in the GMC Sonoma 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
P0100 is a generic OBD2 trouble code that indicates an issue with your GMC Sonoma’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 Sonoma’s MAF sensor without checking the electrical system … Read more
If your GMC Sonoma 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. GMC Sonoma 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 GMC Sonoma is making a sloshing sound while driving it, this is the guide for you. If your Sonoma makes a sound like sloshing water while driving, this is undoubtedly a … Read more
Does your GMC Sonoma’s air conditioning smell bad? This article will provide you with some quick and comprehensive list of causes to help eliminate your truck’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 GMC Sonoma. 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 Sonoma’s oil as soon as possible. P0020 is a generic code, … Read more