Hello
On the Silverados and 37 inch tall tires we would recommend 456 gears. The 410's won't even get you back to stock with that tall of a tire.
the rear part number for the gears is G/2 2-2021-456 install kit G/2 35-2022
if it is 4wd you will need to replace front also to use the 4wd.
front gear G/2 2-2095-456 install kit 35-2095