Vehicle Questions and Answers
Welcome to the Vehicle Q&A Hub. Find answers to your automotive questions, share your experiences, and get expert advice on vehicle maintenance, troubleshooting, and more!
Why is the engine warning light illuminated in my 2018 GMC Terrain?
3773 views
2 answers
★ Top Answer
If you see the check engine light illuminated in your 2018 GMC Terrain, the first step is to safely pull over and park the vehicle as soon as possible. Driving for an extended period with the light on can potentially cause further engine damage. Once stopped, use an OBD II scan tool to retrieve the code that triggered the light. In a newer vehicle like this, a common issue could be a loose gas cap, leading to a code indicating an EVAP system leak due to improper fuel tank pressure.
More answers
-
If the check engine light in your 2018 GMC turns on, there could be several potential problems. Typically, it illuminates whenever the electronic control unit (ECU) detects an issue and stores a diagnostic trouble code. To determine the specific problem, you'll need to connect the vehicle to an OBD scanner and retrieve the code. It may also activate as you near a scheduled service interval. Potential causes can range from a loose gas cap, vacuum seal leaks, engine misfires, low oil pressure, faulty spark plugs, or various other issues. The check engine light acts as a general alert for an underlying issue, which could encompass a wide range of problems in the vehicle. While it might be something minor, it is important not to overlook it.
Buying a Used car?
Check it by Epicvin
Check it by Epicvin
