The production codes are on a sticker in the glovebox, Regular Production Option (RPO) codes are what GM uses to identify choices of available equipment when a vehicle is ordered and built.
Government vehicles are built with many variations, just like civvies. Rubber floor is a choice. Vinyl seats, electrical options, ditto. The pursuit vehicle option has a lowered suspension, speed rated tires, and a higher governed speed. I think it’s only available with steel wheels.
AFAIK there’s no reason an agency couldn’t order a PPV with leather seats and other luxury options if they so choose. I’m sure there are plenty of mandatory rules in the ordering guide where option A excludes option B and option Y also requires option X. You’d need the vehicle ordering forms for the year in question to sort all that out.
In any case I wouldn’t sweat it. Unless you’re heading to a racetrack the “PPV” components really don’t affect the average user.
https://www.tahoeyukonforum.com/threads/ppv-does-someone-have-a-list-of-all-differences.125013/