I had condensation in both headlights of my 2014 GMC Sierra. Would really show during rainstorms or car washes.
I put a dry silica pack in each headlight, under my HID bulbs.This cleared my headlights right up. They have been clear for about 8k miles. I did recharge them once (take the silica packs out and put them in the oven at 280 for a couple hours).
These are the biggest packs that I could fit through the access hole. The fit is tight, but they will slide in and sit just below the bulb. Put a little 3M tape on the bottom to make them stay put in the headlight housing.
https://www.amazon.com/gp/product/B006L882NM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
(You need to purchase 2 of the above or something similar)
Hope this works for you guys.