
Cadillac's fuel filler door is located behind the fuel filler door on the right rear side of the vehicle. To open the fuel filler door, press and release the center edge at the rear of the filler door. When the vehicle doors are locked, the fuel filler door will also be locked; pressing the unlock button on the remote key will unlock it. There are three common ways to open the fuel tank: 1. Press-to-open type: This is the method used by Cadillac to open the fuel tank cap, which is currently the most convenient way. Unlocking the doors allows you to press the fuel tank cap to open it, and locking the doors will lock the fuel tank cap. 2. In-car button type: This is a very common method to open the fuel tank cap. When refueling is needed, pressing the switch inside the car will pop open the fuel tank cap. 3. Key-operated type: This method requires a key to turn the knob on the fuel tank opening to open it. However, this method is rarely used nowadays, and older models might have had this type of fuel tank opening mechanism.


