Fuel Economy Light

For vehicles with the fuel economy mode light, it comes on when the eco (economy)

For vehicles with the fuel economy mode light, it comes on when the eco (economy) switch, located on the center console near the shifter, is pressed. For vehicles with a Driver Information Center (DIC) an ECO MODE ON message displays. See Fuel System Messages on page 5‑29 for more information. Press the switch again to turn off the light and exit the fuel saver mode.

    See also:

    Federal Communications Commission (FCC) Rules and with Industry Canada Standards
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    Four-Wheel Drive
    If the vehicle has Four-Wheel Drive, you can send the engine's driving power to all four wheels for extra traction. ...

    Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
    To assist customers who are deaf, hard of hearing, or speech impaired and who use Text Telephones (TTYs), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicat ...