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:
Service Parts Identification Label
This label, on the spare tire cover, has the following
information:
• Vehicle Identification Number (VIN)
• Model designation
• Paint information
• Production options and special equipme ...
Bulb Replacement
For any bulb changing procedure not listed in this
section, contact your dealer. ...
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.
En ...