Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...

Three of the main reasons the check engine light or malfunction indicator lamp (MIL) turns on are: a loose fuel cap, issues with the ignition system, and problems with the emissions system. Many ...

Loss of engine power is an ongoing issue for certain GMC Terrain vehicles, with 2018 through 2022 GMC Terrain units previously experiencing the problem. If you own a 2023 through 2025 GMC Terrain and ...