2012 GMC Canyon Owner's Manual - Page 224

9-52 Driving and Operating Notice: If a new fuel cap is needed, be sure to get the right type of cap from your dealer. The wrong type of fuel cap might not fit properly, might cause the malfunction indicator lamp to light, and could damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5‑12. When replacing the fuel cap, turn it clockwise until it clicks. Make sure the cap is fully installed. The diagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. If the fuel cap is not properly installed, the FUEL CAP message appears on the Driver Information Center (DIC) and the check engine light will be lit on the instrument panel cluster. See Fuel System Messages on page 5‑24 and Malfunction Indicator Lamp on page 5‑12 for more information. WARNING (Continued) . Dispense fuel only into approved containers. Do not fill a container while it is inside a vehicle, in a vehicle's trunk, pickup bed, or on any surface other than the ground. Bring the fill nozzle in contact with the inside of the fill opening before operating the nozzle. Contact should be maintained until the filling is complete. Do not smoke while pumping fuel. Do not use a cellular phone while pumping fuel. . Filling a Portable Fuel Container . { WARNING Never fill a portable fuel container while it is in the vehicle. Static electricity discharge from the container can ignite the fuel vapor. You can be badly burned and the vehicle damaged if this occurs. To help avoid injury to you and others: (Continued) . . { WARNING If a fire starts while you are refueling, do not remove the nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately.