2020 sierra 2500 hood air induction vent swap and mods

Big Skin · February 11, 2020

Hello everyone,

On my 2020 GMC Sierra 2500HD Denali I did a hood air induction vent swap for a chrome vent cover and while I was at it I added Led RGB lights inside the vent taking care not to restrict the air flow. Has anyone else done any chrome or Led RGB mods? If so lets see them please.

ssowie · February 12, 2020

Looks cool. Where did you get the trim piece?

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Big Skin · February 13, 2020

12 hours ago, ssowie said:

Looks cool. Where did you get the trim piece?

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GMC but they gave me one that didn’t have an open vent first and then I had to sit up there with them searching and finally found the one with the open vent. I tried to find you a part number but it’s in a pile of papers somewhere.

Dan Forsythe · February 17, 2020

Was it difficult to mount the lights in the vent? I want to do something similar to my AT4 but am somewhat stumped on how to mount. What exactly did you use and where did you run for power?

Big Skin · February 17, 2020

50 minutes ago, Dan Forsythe said:

Was it difficult to mount the lights in the vent? I want to do something similar to my AT4 but am somewhat stumped on how to mount. What exactly did you use and where did you run for power?

Not to bad to mount. Hot glue gun to temp hold down wires and 100% silicone for more permanent hold long term. The strip has 3m tape but you must alcohol clean good before install them. I also put a bead of the silicone on the sides of the strips to help hold them down. Drill a hole for the power on the right corner on the inside of the vent and seal with the silicone when you are all done. It can be tricky because you have to fish the power and ground wire through the hood channels and under the heat shield to the right hood hinge to travel back to the battery without pinching the wire. Don't forget the wire loom for protection. You can also get a module to control with your phone if you don't like the remote. I also am doing one for a guy with for $250 plus parts. See pics

Dan Forsythe · February 17, 2020

5 minutes ago, Big Skin said:

Not to bad to mount. Hot glue gun to temp hold down wires and 100% silicone for more permanent hold long term. The strip has 3m tape but you must alcohol clean good before install them. I also put a bead of the silicone on the sides of the strips to help hold them down. Drill a hole for the power on the right corner on the inside of the vent and seal with the silicone when you are all done. It can be tricky because you have to fish the power and ground wire through the hood channels and under the heat shield to the right hood hinge to travel back to the battery without pinching the wire. Don't forget the wire loom for protection. You can also get a module to control with your phone if you don't like the remote. I also am doing one for a guy with for $250 plus parts. See pics

Thanks! Guess I have my next weekend project!!!

Big Skin · February 17, 2020

You will need a 2 pin 16 gauge wire for power and ground and I put in a 10 amp mini fuse to be safe.

Edited February 17, 2020 by Big Skin
Needed more info

Dan Forsythe · February 17, 2020

makes sense thanks. i envision either running it off the power for park/clearance lights or just run power to one of the upfitter switches.

PNW · May 11, 2020

How did you end up removing the hood scoop vent? I removed the 4 nuts on the underside and was able to pop up some of the plastic clips but wasn't able to get to three of them that were towards the center as there was no access to them from the underside.

spm1us · August 10, 2020

Did you ever find the correct part number for the chrome OPEN vent? Please let us know thanks!

spm1us · August 12, 2020

GM Part #84686275 is "OPEN" style and Chrome - can anyone please verify this part number will work on Gas engine 2500HD?

dasbill · August 15, 2020

I would like to know details on how you removed it after you took the 4 screws out.

Edited August 15, 2020 by dasbill
Change wording

dasbill · August 15, 2020

I would like to know details on how you removed the vent after you took the 4 nuts off?

spm1us · August 15, 2020

X 2 PLEASE!!!

PNW · August 17, 2020

For those wanting to know how to remove the Air vent on the hood (Hood scoop) on the 2020 GMC Sierra 2500HD AT4

Once you take the hood insulator off, you will need to remove four nuts. The two front ones will be easy to take off with an 8mm deep socket, the other two in the back will need about a 5in deep socket.

After the nut removal, there are 11 clips that hold it in place. You will need to pop them out. Most of them are not accessible from underneath. So using a towel and some upholstery tools I was able to go between the hood and the hood vent, slide the tool over to were the clip was and with some restraining force was able to pop it out. The first pop was the scary one, after that I knew about what force was needed to pop them out. Make sure the tool is lined up with the clip. Out of the 11 only 1 clip broke.

Here's some pics of what the back of the hood scoop looks like and the upholstery tools used.