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
..
Other information:
GMC Terrain 2018-2025 Owners Manual: Immobilizer Operation
This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the transmitter leaves the vehicle. The immobilization system is disarmed when the ignition is turned on or in ACC/ACCESSORY and a valid Remote Keyless Entry (RKE) transmitter is in the vehicle. The security light, in the instrument c..
GMC Terrain 2018-2025 Owners Manual: Online Owner Center
Online Owner Experience (U.S.) my.gmc.com The GMC online owner experience is a one-stop resource that allows interaction with GMC and keeps important vehicle-specific information in one place. Membership Benefits : Download owner’s manuals and view vehicle-specific how-to videos. : View maintenance schedules, alerts, and Vehicle Diagnostic Information. Schedule service appointments. ..