Footnotes — Maintenance Schedule Additional Required Services — Severe

a) Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition. Check that the purge valve, if the vehicle has one, works properly. Replace as needed.

b) Or every four years, whichever comes first.

c) Or every five years, whichever comes first. See Cooling System .

d) Or every 10 years, whichever comes first. Inspect for fraying, excessive cracking, or damage; replace, if needed.

    See also:

    Audio Steering Wheel Controls
    If your vehicle has this feature, some audio functions can be adjusted at the steering wheel. They include the following: (OnStar®/Mute): If your vehicle has OnStar, press this button to i ...

    Turning a Function On or Off
    1. Turn the Menu knob to highlight the function. 2. Press SELECT to turn the function on or off. ...

    Selecting a Band
    Press the RADIO/BAND button to choose AM, FM, or XM, if equipped. The last station that was playing starts playing again. ...