GMC Terrain: Fuel / Cold Weather Operation (Diesel)

GMC Terrain 2018-2025 Owners Manual / Driving and Operating / Fuel / Cold Weather Operation (Diesel)

In cold weather, the fuel filter may become clogged by wax naturally present in the fuel. To unclog it, move the vehicle to a warm garage area and allow the filter to warm up. The fuel filter may need to be replaced. See Fuel Filter Replacement (Diesel).

At temperatures below 0 °C (32 °F), it is recommended to avoid using biodiesel blends above 5% blend. This blend may cause fuel filter plugging, system gelling, and freezing that may affect vehicle starting. You may need to turn the ignition on and off a few times before the vehicle will start. Also, idle the vehicle for a couple of minutes before accelerating.

It is recommended to use Ultra Low Sulfur No. 1-D diesel fuel or a blend of No. 1-D and No. 2-D diesel fuel to enhance vehicle operation in cold weather at temperatures below 0 °C (32 °F). Use of No. 1-D diesel fuel may lower the fuel economy. For additional information for better cold weather operation, see Engine Heater 0 200.

    Biodiesel

    Biodiesel is a renewable fuel produced from vegetable oils or animal fats that have been chemically modified to make it compatible with diesel fuel...

    Water in Fuel (Diesel)

    Improper fuel tank inspection or cleaning, or contaminated fuel from suppliers, can cause water to be pumped into the fuel tank along with the diesel fuel...

    Other information:

    GMC Terrain 2018-2025 Owners Manual: Replacing LATCH System Parts After a Crash


    Warning A crash can damage the LATCH system in the vehicle. A damaged LATCH system may not properly secure the child restraint, resulting in serious injury or even death in a crash. To help make sure the LATCH system is working properly after a crash, see your dealer to have the system inspected and any necessary replacements made as soon as possible...

    GMC Terrain 2018-2025 Owners Manual: Delayed Locking


    This feature delays the actual locking of the doors until five seconds after all doors are closed. Delayed locking can only be turned on when the Open Door Anti-Lockout feature has been turned off. When is pressed on the power door lock switch with the door open, a chime will sound three times indicating that delayed locking is active...

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