Let me list all the parts needed just so if someone comes along this and wants to do it themselves, they are easily available. Please add or take off stuff if I got it wrong. The parts below are if you are buying these parts from GM Parts Direct. If you are wanting to do a trade or buy from someone who has a 2016-19 Model Year, some of the parts will be redundant such as the hood weather stripping and insulation, different trim packages on the grille headlight bezel color, etc.
Hood https://www.gmpartsdirect.com/auto-parts/2016/chevrolet/silverado-1500/ltz-trim/5-3l-v8-gas-engine/body-cat/hood-and-components-scat:
- At the link above, you will need Parts 1, 4, 5, and 6. This is the Hood Panel, Front Weather-Strip, Rear Weather-Strip, Hood Insulation Pad.
Grille https://www.gmpartsdirect.com/auto-parts/2016/chevrolet/silverado-1500/ltz-trim/5-3l-v8-gas-engine/body-cat/grille-and-components-scat:
- This all depends on which Grille you want to buy if buying from GM Parts Direct. But, you're going to need the grille, and the Inner Grille shown in the link above. If buying from GM Parts Direct, you will also need the Grille Emblems.
- You will also need the Front Panel Assembly which can be bought from this link: https://www.gmpartsdirect.com/oem-parts/gm-panel-assembly-23461838/?c=Zz1ib2R5JnM9ZnJvbnQtcGFuZWxzJmk9R0gxNDAyMzUmcj0xJmE9Y2hldnJvbGV0Jm89c2lsdmVyYWRvLTE1MDAmeT0yMDE2JnQ9bHR6JmU9NS0zbC12OC1nYXM%3D
- The Front Panel Assembly parts you need are circled in the picture 2 posts above.
Headlights https://www.gmpartsdirect.com/auto-parts/2017/chevrolet/silverado-1500/ltz-trim/5-3l-v8-gas-engine/electrical-cat/headlamp-components-scat:
- Obviously 2 of these. You're also going to need the headlight harness if going with LTZ headlights which are LEDs. The link for the harness is: https://www.gen5diy.com/products/14-15-silverado-16-18-ltz-headlight-harness
- If not going with LTZ headlights, and instead going with LT headlights, you will need that corresponding harness as well. (I don't have a link for this)
Bumper:
- Now, this one is tricky because its easier to just buy this part off eBay or find an aftermarket bumper you like that fits 2016-2019 models. If you buy from GM Parts Direct, you're also going to have to buy all of the inner support braces for the bumper which can be seen at this link: https://www.gmpartsdirect.com/auto-parts/2017/chevrolet/silverado-1500/ltz-trim/5-3l-v8-gas-engine/body-cat/bumper-and-components-front-scat
- BUT, no matter which bumper you get, whether it be a 2016-19 OEM Bumper from someone on eBay, you buy the bumper and all the inner support brackets from GM Parts Direct, or find an aftermarket bumper you like, you are going to need to purchase part #13 from the diagram in the link above. These are the guide brackets for the 16-19 bumper (you're going to need to purchase the left and right guide brackets).
- ALSO, if you're going to be buying from GM Parts Direct, you will need the valence and filler panels which can be found here: https://www.gmpartsdirect.com/auto-parts/2017/chevrolet/silverado-1500/ltz-trim/5-3l-v8-gas-engine/body-cat/aero-ground-effects-and-body-kits-scat
@Frankielozano214 let me know if this is correct.