Brake lights are one of the most critical safety features that your GMC Sonoma has. They let other drivers know when you are slowing down, and that they need to slow down too. If your brake lights aren’t working, you’re way more likely to get rear ended than normal. The good news is that troubleshooting … Read more
One of the most undervalued diagnostic tools is the human nose. There’s a lot our nose can tell us about a vehicle with a few quick sniffs. If you happen to smell a rotten egg smell coming from your GMC Sonoma, it is certainly a cause for concern. It is most commonly associated with a … Read more
It can be very disconcerting if your GMC Sonoma is starting and then dies. It is most likely caused by some type of issue with the electrical or fuel system. But, there can be other causes as well. Your Sonoma’s engine needs 3 things constantly and in the proper proportion to keep running. Air Fuel … Read more
It is both frustrating and unsafe to drive your GMC Sonoma 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 GMC Sonoma 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 GMC Sonoma 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 GMC Sonoma. 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 GMC Sonoma’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 GMC Sonoma has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. Your Sonoma’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 GMC Sonoma 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