GMC Terrain: Emissions Inspection and Maintenance Programs - Malfunction Indicator Lamp - Warning Lights, Gauges, and Indicators - Instruments and Controls - GMC Terrain Owner's ManualGMC Terrain: Emissions Inspection and Maintenance Programs

Some local governments may have programs to inspect the on-vehicle emission control equipment. For the inspection, the emission system test equipment is connected to the vehicle’s Data Link Connector (DLC).

The DLC is under the instrument panel to the left of the steering wheel. See

The DLC is under the instrument panel to the left of the steering wheel. See your dealer if assistance is needed.

The vehicle may not pass inspection if:

○ The malfunction indicator lamp is on with the engine running, or if the light does not come on when the ignition is turned to ON/RUN while the engine is off. See your dealer for assistance in verifying proper operation of the malfunction indicator lamp.

○ The OBD II (On-Board Diagnostics) system determines that critical emission control systems have not been completely diagnosed. The vehicle would be considered not ready for inspection. This can happen if the 12-volt battery has recently been replaced or run down. The diagnostic system is designed to evaluate critical emission control systems during normal driving. This can take several days of routine driving. If this has been done and the vehicle still does not pass the inspection for lack of OBD II system readiness, your dealer can prepare the vehicle for inspection.

    Malfunction Indicator Lamp
    A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors the operation of the vehicle to ensure emissions are at acceptable levels, to produce a cleaner environment. This ...

    Brake System Warning Light
    The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits ...

    See also:

    Sunshade Operation
    The sunshade can be opened manually. However, the sunshade will open automatically as the sunroof opens. NOTE: The sunshade cannot be closed if the sunroof is open. ...

    Check MyKey System Status
    The vehicle’s message center system check will provide the status of the following MyKey parameters: • MYKEY MILES — This odometer only tracks mileage when a MyKey is used. If mileage does ...

    When the System Does Not Seem to Work Properly
    The following messages may be displayed on the DIC: SERVICE PARKING ASSIST: If this message occurs, take the vehicle to your dealer to repair the system. PARK ASSIST OFF: If the URPA system does n ...