GMC Terrain: Service and Maintenance / Recommended Fluids, Lubricants, and Parts

Additional Maintenance and Care

Your vehicle is an important investment and caring for it properly may help to avoid future costly repairs. To maintain vehicle performance, additional maintenance services may be required...

Recommended Fluids and Lubricants

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Other information:

GMC Terrain 2018-2023 Owners Manual: Diesel Exhaust Fluid

Warning Avoid getting Diesel Exhaust Fluid (DEF) on your skin or in your eyes as it could cause irritation. For more safety, handling, and storage information, see the Diesel Exhaust Fluid container label. Diesel Exhaust Fluid (DEF) is used with diesel engines to reduce the amount of regulated emissions produced. Products such as AdBlue are types of DEF, and are approved for use in the ..

GMC Terrain 2018-2023 Owners Manual: Checking Coolant

The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level mark is not visible, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant surge..