The 2011 GMC Terrain SLT is a relatively problematic car to maintain when compared to other similar models. In order to reliably access the headlight, you will have to reach through the wheel well lining and use a few tools. This can be tough, as the lining can grow rigid and tight to the vehicle over time. You will need many tools, and have to remove many components in order to access the battery on this vehicle. To replace the front wiper blade, you will need the use of tools to complete. Other models do not require the use of tools for completing this repair.
Some things are easier on the 2011 GMC Terrain SLT. To access the fog light, you only have to reach underneath the vehicle for access to the bulb. The engine coolant fluid level is easy to check, as the fluid reservoir is very visible in the engine bay. Both the engine and interior fuse boxes are easily accessible on this vehicle. You only have to remove one cover to access either set of fuses, making electrical troubleshooting easy.
Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.