One of the most alarming sounds you can hear from your GMC Terrain 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 Terrain’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant getting into … Read more
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 Terrain’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 Terrain’s ECU. … Read more
One of the most inconvenient things that can happen to your GMC Terrain is when the speedometer stops working. You don’t realize how much you look at the thing until it’s always sitting at 0 MPH while driving down the road. If your vehicle’s speedometer is not working, it’s usually caused by an issue with … Read more
One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your GMC Terrain isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. It is entirely possible for your Terrain’s heater to work just fine even when the air conditioner is blowing … Read more
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 Terrain included). There’s always more than one fuel injector, and even one going bad is enough to make … Read more
One of the most common problems with the GMC Terrain (or any vehicle) is when the brakes are grinding. The number one cause of grinding brakes is going to be brake pads that have worn all of their friction material off. But, there are other causes as well. Your GMC Terrain is always going … Read more
If your GMC Terrain’s steering wheel is shaking, you should deal with it immediately. A shaking steering wheel in the GMC Terrain 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
The “Service Stabilitrak” message in a GMC Terrain signals a problem with the vehicle’s stability control system. Common causes include faulty sensors, damaged wiring, or issues with the control module. In my experience, “Service Stabilitrak” is most often caused by a bad wheel speed sensor in the Terrain. GMC Terrain Diagnostic Table The number one … Read more
Bad Coil Packs are one of the more problematic ignition issues that can occur with the GMC Terrain. A bad oil pack can make your Terrain almost un-drivable. Or it may have little effect at all on the engine’s ability to run. It’ll get worse as they lose their ability to fire the spark plugs. … Read more
If your GMC Terrain doesn’t start, you’ve found the right article. Many different issues can cause the problem. We cover all the likely ones in an order that makes sense when diagnosing the issue at home. This article is written with the assumption that you are looking for a way to get your GMC Terrain … Read more