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Hill Start Assist: holds the brakes momentarily under certain conditions to give you extra time to switch from brake to accelerator.
StabiliTrak: uses a network of sensors to determine whether the vehicle is responding properly to steering and braking commands. It can pulse the brakes or reduce engine power to help maintain the path being steered.
Driver Information Center: includes warning messages and vehicle information.
Keyless Entry: makes entering your Sierra 1500 Limited more convenient.