Footnotes — Maintenance Schedule Additional Required Services — Severe
a) Vehicles with different size front and rear tires do not have tire rotation. See Tire Rotation.
b) Or every two years, whichever comes first.
c) 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.
d) Or every four years, whichever comes first.
e) Do not directly power wash the transfer case output seals. High pressure water can overcome the seals and contaminate the transfer case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced.
f) Or every five years, whichever comes first. See Cooling System.
g) Or every 10 years, whichever comes first. Inspect for fraying, excessive cracking, or damage; replace, if needed.
h) Inspect for fraying, excessive cracking, or damage; replace, if needed.
See also:
Turn-by-Turn
This display is used for the OnStar or Navigation System Turn-by-Turn
guidance. See OnStar Overview or the navigation manual, if the vehicle has
navigation, for more information. ...
Warranty
OnStar equipment may be
warranted as part of the new-vehicle
limited warranty. The manufacturer
of the vehicle furnishes detailed
warranty information. ...
Easy Exit Driver Seat
This allows you to turn the easy exit driver seat feature on or off.
When on, this feature will move the driver seat rearward upon turning the
ignition off and the driver door opened. This may be ...






