GMC Terrain: Initial Drive Information / Passenger Sensing System

Head Restraint Adjustment and Seat Belts

Head Restraint Adjustment Do not drive until the head restraints for all occupants are installed and adjusted properly. To achieve a comfortable seating position, change the seatback recline angle as little as necessary while keeping the seat and the head restraint height in the proper position...

Mirror Adjustment

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Other information:

GMC Terrain 2018-2024 Owners Manual: Diesel Exhaust Fluid

Diesel Exhaust Fluid (DEF) is used with diesel engines to reduce the amount of regulated emissions produced. The DEF system must be maintained for the vehicle to run properly. It is normal to hear the DEF system purge fluid back into the tank after the vehicle is shut off. Locating Diesel Exhaust Fluid DEF can be purchased at a GMC dealer. It can also be purchased at authorized vehicle de..

GMC Terrain 2018-2024 Owners Manual: Engine Air Cleaner/Filter

The engine air cleaner/filter is in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview. When to Inspect the Engine Air Cleaner/Filter For intervals on changing and inspecting the engine air cleaner/filter, see Maintenance Schedule. How to Inspect the Engine Air Cleaner/Filter Do not start the engine or have the engine running with the engine air clea..