Experiencing an engine rattle in your GMC Sierra can be quite concerning, but fear not! This is a common issue faced by many Sierra owners, and understanding the possible causes can have you on your way to a smooth-running engine in no time. In this article, we’ll explore the most common reasons a GMC Sierra … Read more
If your GMC Sierra’s transmission has been slipping, it is a very serious problem. It’ll get worse in a relatively short period of time, leaving the vehicle inoperable. You’ll want to find out what is wrong, and have it repaired quickly, before any further lasting damage can occur. We’ve lined out some of the most … Read more
Extreme weather can be very difficult on your GMC Sierra. 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
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 Sierra. Timing belts are made out of rubber and … Read more
There are a few easy to fix reasons why your GMC Sierra’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
If your GMC Sierra’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
A very common problem that affects all vehicles (including the GMC Sierra) is blue smoke coming from the exhaust. Reasons for blue exhaust smoke include bad valve seals, valve train wear in general, the PCV valve, burning transmission fluid and more. Blue smoke indicates that your Sierra’s engine is burning oil. The question is … Read more
If your GMC Sierra is experiencing a whining noise, determining where and when the noise is happening is coming from is key to diagnosing and tracking down the cause. With that in mind, this page is divided by when you hear the whining noise and common causes under those conditions. Is the whining noise … Read more
When you start your GMC Sierra, the airbag module runs a self-diagnostic check on all its major systems. If any of these checks fail, you will see an airbag warning light on the dashboard. Depending on the model year and what country you happen to be in, you may get something along the lines of … Read more
If your GMC Sierra smells like gas, it may indicate a serious issue. It would be best to treat your truck as though you have a fuel leak (don’t drive it) until you know there isn’t one. A bad gas cap typically causes the smell of gas, the evaporative emissions system leaking, overfilling the … Read more