GMC Terrain: Driving and Operating / Conversions and Add-Ons
Add-On Electrical Equipment
Warning
The Data Link Connector (DLC) is used for vehicle service and Emission Inspection/Maintenance testing. See Malfunction Indicator Lamp (Check Engine Light). A device connected to the DLC — such as an aftermarket fleet or driver-behavior tracking device — may interfere with vehicle systems. This could affect vehicle operation and cause a crash. Such devices may also access information stored in the vehicle’s systems.
Caution
Some electrical equipment can damage the vehicle or cause components to not work and would not be covered by the vehicle warranty. Always check with your dealer before adding electrical equipment.
Add-on equipment can drain the vehicle's 12-volt battery, even if the vehicle is not operating.
The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing the Airbag-Equipped Vehicle and Adding Equipment to the Airbag-Equipped Vehicle.
Towing Equipment
Hitches
Always use the correct hitch
equipment for your vehicle.
Crosswinds, large trucks going by,
and rough roads can affect the
trailer and the hitch...
Vehicle Care
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Other information:
GMC Terrain 2018-2025 Owners Manual: Rear Window Wiper/Washer
The ignition must be on or in the ACC/ACCESSORY position to operate the rear window wiper/ washer. Turn the end of the windshield wiper lever to operate the rear window wiper/washer. OFF : Turns the system off. INT : Intermittent wipes. ON : Slow wipes. : Push the windshield wiper lever forward to spray washer fluid on the rear window. The lever automatically returns to its original pos..
GMC Terrain 2018-2025 Owners Manual: Midlevel DIC
Info Page Options The info pages on the DIC can be turned on or off through the Options menu. Press to access the cluster applications. Press or to scroll to the Options application. Press to enter the Options menu. Scroll to Info Pages and press . Press or to move through the list of possible information displays. Press while an item is highlighted to select or d..
