Congrats on the new ride.
There`s a saying amongst detailing freaks. (As in folks that like to be overly OCD keeping their vehicles up.)
Keeping up a vehicle is a hobby. Keeping up a BLACK vehicle is a full time career! :blink:
Actually I`ve got a 2016 Silverado LTZ Plus, 4x4, running boards, in Siren Red Tintcoat, riding on chrome 22`s coming next week.

Pretty much the same chrome grill as yours, (just the new front end).
Someone mentioned the Dealer Installed Swirl Option or DISO as we call it. Knowing that, I told my dealer three things.
1: Do not remove the plastic
2: Do not WASH IT.
3: Do not even LOOK at it till I`m there! LOL
I`d love to help you out on the pads, but don`t do CG pads.

Generally... for GM paint you`ll get by with Lake Country orange then move to white. Whatever the CG version of that is will work. Now you`ll need AT LEAST 6 pads, of a single color... to buff that beast. (I`d use more like 8 probably.) That`s not saying you have to have 6, as you can get by with 4, but YOU NEED ALL FOUR.
You`ll use your pads in a FIFO rotation. First In First Out
When you use one through it`s cycle, you clean it on the fly after EVERY section you do. (A section is basically working within your shoulders, 20~24" wide and deep.)
After you do 3~4 sections you need to clean on the fly, then take some pad cleaner and clean it deeper, including cleaning under hot water.
After cleaning... put it back on the buffer on speed 4-ish and spin it to remove excess water, sit it aside, Velcro side up, and let it dry.
(
This is where it works great if you have a fan that you can sit horizontal and just sit your pads on the fan to dry.)
Start at the top, roof down. That roof will take a good 2 pads.
While you still have some CLEAN, VIRGIN pads do the hood. The hood will take 2 pads. Remember... FIFO
So at this point you`ve gone through 4 pads. However... if you spun dried the first 2, pad 1 should be ready to go back into duty.
Front fender, front door... 1 pad (per side).
ack doors (both sides) 1 pad.
Bed sides 1 pad (per side).
Tailgate 1 pad.
So you see... by the time it`s all said and done you`ve used 10 pads.
This is why I`ve recommended for YEARS that PBMG offer something along the line of a "Detailers Dozen". Grab say 6 orange, 4 white, 2 blue, 1 black and call it a day. Unfortunately... they don`t really listen to me much. LOL Although I`d still stick by the 6 orange 4 white, 2 blue statement as a setup that`ll do pretty much anything you`ll run across. Maybe even 6 orange and 6 white. The thing about white pads is they are in the middle of the cut/finish scale. With a heavy cut SMAT based compound they`ll do some fairly nice correction. Then with a heavy cut DAT compound like Menzerna FG400 (now called Heavy Cut 400) it`ll cut like crazy those first 2 passes then continue to work it down for the full 8 ~10 passes and you`ll be BLOWN AWAY how well it`ll finish down!!!!!
I`d also recommend you coat it. Being in a complex, not having a garage for it, a coating is going to give you better protection down the road.
Many coatings these days are pretty easy. Pinnacle Black Label, Duragloss, CQuartz (regular or UK Edition) Optimum Gloss Coat, are all hard to do wrong.
Although I *would* recommend using the CarPro applicator and suede microfiber cloth to lay down the coating thinner, smoother, more evenly, and use less of it during the process. (Which helps avoid high spots.)
You can always top a coating with a spray sealant/booster if you like every couple to every 6 months. Some even have their own dedicated `booster`.
Lastly... you need towels, GOOD microfiber towels, and AT LEAST a couple dozen of them. (
I have more like hundreds, and am always on the lookout for better towels.)

There are plenty of places to look, including PBMG (
especially as they`ve come down on their towel prices to match the big two online suppliers). Often, the new PBMG prices are so close that when they have a sale you end up getting your basic towels cheaper than anywhere else.

When I mention a "basic" towel I`m talking about the Gold Plush Jr. which is a 360GSM towel. That`s pretty much the standard for a "basic" towel. They are better than anything you`ll find locally, and can be had for under a couple bucks each when they are on sale.
Of course if you wanted to buy wholesale, and get 180 at a time.... you can get a good 360~365GSM towel for less than half normal retail pricing, but might spend the night in the doghouse when your wife comes home and sees the entire dining room table covered in towels! LOL