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...
Battery Power Protection
The battery saver feature protects against
draining the vehicle's battery.
If some interior lamps or the manual
parking lamps or headlamps are left on and
the ignition is turned off, the battery
rundown protection system automatically
turns the lamp off after some time...