Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if the
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and
an Advisor can run a check.
See also:
Interior Care
To prevent dirt particle abrasions, regularly clean the vehicle's interior.
Immediately remove any soils. Note that newspapers or dark garments that can
transfer color to home furnishings can also ...
Older Children
Older children who have outgrown booster seats should wear the vehicle
safety belts.
The manufacturer's instructions that come with the booster seat state the
weight and height limitations fo ...
Footnotes — Maintenance
Schedule Additional Required
Services — Normal
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. More frequent
replacement may be needed if the ...