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:

    Bulb Replacement
    For any bulb changing procedure not listed in this section, contact your dealer. ...

    Storing and Deleting Phone Numbers
    The system can store up to 30 phone numbers as name tags in the Hands-Free Directory that is shared between the Bluetooth and OnStar systems. The following commands are used to delete and s ...

    If Steam Is Coming From The Engine Compartment
    WARNING: Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Turn it off and get everyone away ...