See also:

Recommended Fluids and Lubricants
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Lamps On Reminder
For vehicles with the lamps on reminder light, it comes on when the lights are in use. ...

Automatic Dimming Rearview Mirror
The vehicle may have an automatic dimming inside rearview mirror with OnStar® and/or a compass display. Automatic dimming reduces the glare from the headlamps of the vehicle behind you. The dim ...