Once a Year
• Starter switch check. See Owner Checks and Services.
• Parking brake and automatic transmission P (Park) mechanism check. See Owner Checks and Services.
• Automatic transmission shiftlock control system check. See Owner Checks and Services.
• Ignition transmission lock check. See Owner Checks and Services.
• Engine cooling system and pressure cap pressure check. Radiator and air conditioning condenser outside cleaning. See Cooling System.
• Exhaust system and nearby heat shields inspection for loose or damaged components.
• Accelerator pedal check for damage, high effort, or binding. Replace if needed.
• If the vehicle has a Tire Sealant and Compressor Kit, check the sealant expiration date printed on the instruction label of the kit. See Tire Sealant and Compressor Kit.
See also:
Tire Rotation and Required
Services Every 12 000 km/7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation.
• Check engine oil level and oil
life percentage. If needed,
change engine oil and ...
Automatic Crash Response
In a crash, built in sensors can automatically alert an
OnStar advisor who is immediately connected to
the vehicle to see if you need help. ...
Tire Inspection
We recommend that the tires, including the spare tire, if the vehicle has one,
be inspected for signs of wear or damage at least once a month.
Replace the tire if:
The indicators at three or mo ...
