A very common problem that affects all vehicles (including the GMC Sonoma) 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 Sonoma’s engine is burning oil. The question is … Read more
If your GMC Sonoma 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 Sonoma, 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 Sonoma 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
If your GMC Sonoma’s battery is draining, it’s something that’ll need addressing right away. If it is draining while your Sonoma isn’t running, something is drawing current that shouldn’t be. If the battery drains while driving, there’s likely an issue with your truck’s alternator. The two primary causes for a battery to deplete are parasitic … Read more
If your GMC Sonoma won’t accelerate, that is a serious cause for concern. If your check engine light is on, get a code scanner and see what trouble codes are stored in the PCM (powertrain control module). They can provide valuable insight as to what the problem may be and help you narrow down … Read more
A vehicle that is pulling to the left can be dangerous to drive. In the US, left is the direction of oncoming traffic. This makes pulling to the left even more dangerous than pulling to the right. Keeping straight when your GMC Sonoma wants to veer into traffic makes driving stressful. If your Sonoma pulls … Read more
When your GMC Sonoma pulls to the right, it makes driving difficult. Keeping straight when your Sonoma wants to veer off the road is dangerous, and takes all of the joy out of driving. Fixing a vehicle pulling to the right should be considered a high priority repair. GMC Sonoma Pulls to the Right … Read more
If you’re a GMC Sonoma owner, you’re likely aware of the common issues that can arise with your vehicle. One of the most frustrating problems is discovering an oil leak. Not only can it be a messy hassle to clean up, but it can also be a sign of a more serious issue. Gaskets and … Read more
If your GMC Sonoma is leaking water, it could mean a few different things are happening. Some water is completely acceptable. It depends on the situation. It really depends on where you’ve found it, and if it is really water. Coolant or Water? If you are trying to figure out if your GMC Sonoma … Read more