That's not so easy to answer, as there's no guarantee that the bike still has the original tires. If it has any tires on it's usually printed on the tire sidewall what size it is. I'll post a link with info on rim / tire combos.

If it has nav system it is in the center counsel

drive it off a cliff, because GM won't help you. Make sure you jump out of the POS over-priced SUV BEFORE it goes off the cliff. Wait for explosion (hopefully) when it hits the bottom of the gorge - alarm reset - permanently

fuel pump removal and installation 2000 GM Yukon Denali

A good salvage yard will have what you need. Talk to a busy auto body shop in your neighborhood. They will be able to steer you in the right direction.

Under the cup holder assembly is where I found my amp in my 03 yukon denali

Yes you can.