GMC Sonoma Engine Knocking Causes + How to Fix

One of the most alarming sounds you can hear from your GMC Sonoma 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 Sonoma’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant getting into … Read more

GMC Sonoma Bad Oxygen Sensor: Symptoms and Diagnosis + How to Fix

Oxygen sensors play a crucial role in your GMC Sonoma’s emissions system and fuel management. These sensors detect the levels of oxygen present in the exhaust, which is a primary component in maintaining the optimal air-fuel ratio. A damaged or faulty oxygen sensor can have a significant impact on your truck’s overall performance, making it … Read more

GMC Sonoma: Bad MAF Sensor → Symptoms & Causes

  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 GMC Sonoma’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 Sonoma’s ECU. … Read more

GMC Sonoma: Bad Fuel Pump → Symptoms & Diagnosis

  One of the worst problems that can happen to a vehicle is a bad fuel pump.  If your GMC Sonoma’s fuel pump goes bad, no fuel (or not enough fuel depending on whether or not it’s out all the way) can enter the engine.  Without gas your Sonoma will not run at all.  With … Read more

GMC Sonoma Bad Fuel Injector: Symptoms, Diagnosis, How to Fix

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 (GMC Sonoma included).   There’s always more than one fuel injector, and even one going bad is enough to make … Read more

GMC Sonoma: Bad Fuel Filter → Symptoms & Diagnosis

One of the worst problems that can happen to your GMC Sonoma is a bad fuel filter.  When the filter goes bad, it can limit the amount of fuel that enters the engine.  Without fuel, the vehicle will not run at all.  With that in mind, most of the symptoms of a bad fuel filter … Read more

GMC Sonoma: Won’t Start When Cold → Diagnosis

Extreme weather can be very difficult on your GMC Sonoma.  If there is an issue it often make itself known when conditions are at their worst.  When it’s extremely hot. it’s the cooling system that is put to the test.  In the winter, the vehicle won’t start when it is cold.   There are a … Read more

GMC Sonoma:  Bad Timing Belt or Chain Symptoms

A bad timing belt or timing chain can be a serious issue.  If it jumps a tooth or breaks entirely, it can lead to permanent engine damage.  Knowing the symptoms of a bad timing belt or chain is vital so this doesn’t happen to your GMC Sonoma. Timing belts are made out of rubber and … Read more

GMC Sonoma: Key Stuck in Ignition → Diagnosis

There are a few easy to fix reasons why your GMC Sonoma’s key might get stuck in the ignition.  It’s often easy to unstick the key.  Whatever you do, don’t start trying to rip it out of the ignition.  That can cause bigger problems. This article is written with the assumption that your key is … Read more

GMC Sonoma Steering Wheel Hard to Turn: Common Causes

If your GMC Sonoma’s steering wheel is hard to turn, it’s almost always going to be caused by an issue with the power steering system.  But there can be other causes as well. Your truck’s power steering system is responsible for taking energy from the engine, converting it to hydraulic pressure, and using that pressure … Read more