GMC Terrain: Exterior Lighting / Fog Lamps

Turn and Lane-Change Signals

Move the lever all the way up or down to signal a turn. An arrow on the instrument cluster will flash in the direction of the turn or lane change. Raise or lower the lever until the arrow starts to flash to signal a lane change...

Interior Lighting

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Other information:

GMC Terrain 2018-2025 Owners Manual: Maintenance Schedule

Owner Checks and Services At Each Fuel Stop Check the engine oil level. See Engine Oil. Once a Month Check the tire inflation pressures. See Tire Pressure. Inspect the tires for wear. See Tire Inspection. Check the windshield washer fluid level. See Washer Fluid. Engine Oil Change When the CHANGE ENGINE OIL SOON message displays, have the engine oil and filter changed within the..

GMC Terrain 2018-2025 Owners Manual: Diesel Particulate Filter

The Diesel Particulate Filter (DPF) system filters soot particles out of the exhaust gases. The DPF is under the vehicle in the exhaust system. Depending on a number of factors monitored by the engine computer, the DPF will need to be cleaned of accumulated solids. When a cleaning is needed, the engine computer will initiate a self-cleaning function that runs automatically during drivin..