Engine Oil Additives/Engine Oil Flushes

GMC Sierra / GMC Sierra Owners Manuals / Vehicle Care / Vehicle Checks / Engine Oil / Engine Oil Additives/Engine Oil Flushes

Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.

Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.

    See also:

    Airbag System
    The vehicle has the following airbags: ○ A frontal airbag for the driver. ○ A frontal airbag for the right front passenger. ○ A seat-mounted side impact airbag for the driver. &# ...

    Airbag Readiness Light
    This light shows if there is an electrical problem. The system check includes the airbag sensor(s), passenger sensing system, the pretensioners, the airbag modules, the wiring, and the crash sensi ...

    Bluetooth Controls
    Use the buttons located on the steering wheel to operate the in-vehicle Bluetooth system. See Steering Wheel Controls on page 5‑2 for more information. (Push To Talk): Press to answer incomin ...