Other information:
GM has developed and matched specific tires for the vehicle. The original equipment
tires installed were designed to meet General Motors Tire Performance Criteria Specification
(TPC Spec) system rating. When replacement tires are needed, GM strongly recommends
buying tires with the same TPC Spec rating...
If equipped, the ignition is on or in ACC/ACCESSORY and the power door lock switch
is pressed with the driver door open, all the doors will lock and only the driver
door will unlock.
If the vehicle is off and locking is requested while a door is open, when all
doors are closed the vehicle will check to the Keyless Access function (if equipped)...