Not a factory accessory, but GM is selling these though the Chevy dealer. Part number 19418473
Enhance your camping, tailgating or any outdoor experience with a lightweight Chevrolet Accessories SPORTZ Cove awning by Napier Outdoors.
Compact and lightweight — keep the SPORTZ Cove in the vehicle for an unexpected adventure
Provides over two feet of awning for shade and shelter from the sun
Features a built-in storm flap and seam seals for weather protection and privacy
Includes a mesh-screen door for bug-free enjoyment
Awning bag, tie straps, awning, pole bag, poles, stake bag and stakes required for easy setup are all included
Packaged in an included lightweight carrying bag for easy storage