So, let me preface this by saying, as of today 8/14/20, no one still makes hood mounted LED pod light mounts for the new body 2019+ Sierra. Suffice to say, I got tired of waiting.
So, I bought a set of the APS mounts made for the 2019+ Silverado for $75 online. I figured if I hacked them up and it doesn't work, I'm only out $75. Shipped out right away and got them quick.
First thing, these brackets are thick. That was reassuring knowing I'd have to modify them somehow.
Second, the brackets are too long for the driver side. The cut right into the wiper arm when it comes full vertical. I took off 1/4" off both brackets but still had to continue grinding the rear-facing edge down until I had clearance on the driver side. I also had to grind down the outer edges that were making contact with the hood closer to the hood line. Luckily, these APS mounts are beefy and can handle the loss of material. Also, the wiper arm that I grinded into is only like $25 to replace, so ill buy that down the line.
This took a LOT of trial and error mounting them on the hood, taking them off, grinding more off, refitting, removing, etc. This won't work unless you have a cutoff wheel, grinding wheel, etc. And your trial and error will likely cost you a wiper arm as well.