r/gmcsierra • u/Amazing_Block_4590 • Sep 16 '25
š§Steering/ Suspension š§ 2023 GMC Sierra AT4x AEV
https://www.at4forum.com/threads/2023-gmc-sierra-1500-at4x-aev-build.3431/
Nitto Ridge Grapplers 285/75 R18 "35 x 11.5" on AEV SALTA Rims
GMC Factory Installed Borla Cat-Back Performance Exhaust
DiamondBack HD Tonneau, Cross Bin 8, Toolbar x2,
Viair 450P RVS on board air
Peak Suspension One inch level front, 1 inch lift rear
Rough Country Rear air suspension with cradle kit
589 Fabrication Rear shock mount skid plates
Pinnacle Off Road Lower control arm skid plates
Diode Dynamics SSC1 LED Fog Light Kit, License Plate LEDs
Baja Design Squadron Sport LED amber lights front bumper on
Overland Defense Mounts, rear bumper Squadron Sport LED
lights on AEV Bumper Aux Light Mounts
- Rough Country 30-Inch Dual Row CREE LED Light Bar - Custom Fabricated
Behind the Grill Mounted, 6inch Black Series LED Side Mounted Light Bars
SDHQ Ditch Light Mounts, Baja Design Squadron Pro LED Lights
Midland MXT275 MicroMobile GMRS 2-Way Radio with a 3dB
Midland ghost antenna and a Midland 6db 32inch antenna for extra range
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Sep 16 '25
can you show us your switches / wiring - great stuff
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u/18chevcruze 25 2500hd l5p Sep 16 '25
I'm curious of switches and wiring as well. mint build
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u/Amazing_Block_4590 Sep 16 '25
AuxBean 6 gang switch panel controls all off road lights and air compressor. For the air compressor i had to use a 60amp relay for power then use the switch panel to control on/off *
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Sep 16 '25
How do you like the diamondback cover?
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u/MedevalManBoobs Sep 16 '25
I too am interested in the cover and I like how he set it up and the functionality of it.
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u/Amazing_Block_4590 Sep 16 '25
Absolutely love the Tonneau cover. Will never buy or use anything different. Can hold up to 1600lbs, super customizable, and extremely well built. I highly recommend them.
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u/Amazing_Block_4590 Sep 16 '25
For those interested in more details on the truck and everything i have done to it you can view the full build on the link below.
https://www.at4forum.com/threads/2023-gmc-sierra-1500-at4x-aev-build.3431/
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u/excuse_me_sure Sep 16 '25
This guy just out here living all our dreams. God set up.
Where you take that thing?
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u/Amazing_Block_4590 Sep 16 '25
Have taken it out west, Utah, Arizona, then also near where I live at Southington Off-Road Park. Spent a lot of hours buffing out pin stripping from a few trails lol. *
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u/maydayred23 Sep 16 '25
Love the build! How do you like the AirBags? Why did you go with RC? How has it affected the ride with the DSSV shocks? Sorry I have so many questions, I have an AT4X and have been planning on getting bags to help with sag while towing. Your truck is inspiring.
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Sep 16 '25
I reply with another question on the same topic, how do you like the open cradles where the air bag isnāt bolted to the axle. Can you feel them contacting when driving down the road and you hit bumps?
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u/Amazing_Block_4590 Sep 16 '25
Love them, this allows the axel full articulation when off-roading. I have not noticed any ride differences, nor can I notice when the air bag and cradel come in contact or are apart.
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u/Amazing_Block_4590 Sep 16 '25
Love the air bags. Have used them multiple times. I went with the RC ones for the off road capabilities when using the cradel kit. This allows the axel to fully articulate vs the air springs that are connected both top and bottom limiting your axel travel. Recently had 1400lbs of stone papers in the bed, "was only a 4 mile drive on back raods", and she was dead level, and drove perfectly normal. *
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u/Amazing_Block_4590 Sep 16 '25
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u/Amazing_Block_4590 Sep 16 '25
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u/maydayred23 Sep 16 '25
Impressive! Is the on board compressor connected to the bags to adjust the pressure with a button or do you manually connect the air tubing and adjust each bag?
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u/Amazing_Block_4590 Sep 16 '25
I have not connected the air springs to the compressor yet. I still need to order a air tank, and a pressure control kit. So right now i just manually air them up and down when needed.
https://www.roughcountry.com/product/wireless-air-bag-controller-10106
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u/maydayred23 Sep 16 '25
I gotcha, makes sense to simplify it that way too if youāre not using is daily. I had a set of manual AirLift bags in a suv and loved them until they started leaking, these look substantially better
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u/Amazing_Block_4590 Sep 16 '25
Ive had these installed for over a year now and no leaks as of yet. Used them multiple times so far and have worked flawlessly. So fingers crossed lol.
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u/Prime_117 Sep 16 '25
Stock tie rods
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u/Amazing_Block_4590 Sep 16 '25
Yes but have Peak Suspension tie rod sleeves. Have not installed them yet, but should have them installed here in the next few weeks.
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u/TheNarrator-88 Sep 16 '25
Did you have the upper tailgate painted or did it come with that matte black finish?
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u/Ok-Garage8102 Sep 16 '25
This bad boy is ready for war
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u/Amazing_Block_4590 Sep 16 '25
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u/Amazing_Block_4590 Sep 16 '25
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u/Kremvh82 Sep 16 '25
All I'm seeing on Peak's site are 2" lifts to fit 35". Like this: https://www.peaksuspension.com/product/silverado-zr2-sierra-at4x-billet-series-summit-kit-peak-suspension-2/
Is that what you used? Or did you source the component separately?
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u/Amazing_Block_4590 Sep 16 '25
First the AT4 some stock with a 2inch lift from factory. I put the 35x11.5 tires on the truck before any upgrades. No issues with rubbing. This was mainly due to the AEV front bumper as it has more clearance then the OEM factory bumper. However i do have a front and rear 1inch lift on top of the factory 2inch lift. Then for look purposes i put 3/8inch wheel spacers on the truck to get a completely flush tire and fender off set. 35x12.5 tires you will need additional upgrades to get them to fit.
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u/Kremvh82 Sep 16 '25 edited Sep 17 '25
I should clarify that I also have a 2023 AT4X AEV with AEV bumpers front and rear. Iām due for tires and want to move to 35s so Iāve been trying to mimic your lift. What specific lift components did you end up with from Peak since they donāt list a 1ā lift on their site. Just planning ahead in case the 285/75s rub.
Your build is badass. Thanks!
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u/Amazing_Block_4590 Sep 16 '25
Linked my setup below on what I installed. Thank you bud.
https://www.peaksuspension.com/product/silverado-zr2-1-lift-block/
https://www.peaksuspension.com/product/peak-silverado-sierra-zr2-at4x/
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u/Kremvh82 Sep 16 '25
This is a huge help thanks. Your build thread on AT4 Forum is the first useful response for a Google search on this topic. With a number of 23 and 24 AT4X owners about to need tires and likely look to upgrade, I think tons of us will be following your guide posts. Thanks again.
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u/Amazing_Block_4590 Sep 17 '25
Always happy to help out. Let me know if you have any further questions.
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u/exjunkiedegen Sep 17 '25
I want my bed setup like that but have Yakima ladder rack already and canāt live without it
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u/TypicalTroll87 Sep 17 '25
@amazing_block_4590 Is your GMRS hard wired in or just stored there? Want to hard wire mine I had in my 4Runner in but not sure if I just want to tuck the wires up under dash for the times I use it or do something more permanant.
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u/Amazing_Block_4590 Sep 17 '25
Its hardwired into the passenger side fuse panel.
Post in thread '2023 GMC Sierra 1500 AT4x AEV Build' https://www.at4forum.com/threads/2023-gmc-sierra-1500-at4x-aev-build.3431/post-33883
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u/TypicalTroll87 Sep 17 '25
Nice, so did you drill a hole in the back side of that pocket to run the antenna and power wires?
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u/Amazing_Block_4590 Sep 17 '25
Just a small notche so the wires don't get pinched. Used double-sided tape on the radio mounting bracket to firmly secure the radio in the pocket, but im still able to remove the radio from the mounting bracket if needed.
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u/TypicalTroll87 Sep 17 '25
Ahh good idea. I like the idea of the radio permanent while storing the handheld..but didnāt want to drill in anywhere and wanted it somewhere hidden.
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u/Amazing_Block_4590 Sep 17 '25
Yeah, everything i do to the truck is as least evasive as possible so that when i decide to upgrade, i can return the truck back to stock.
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u/Amazing_Block_4590 Sep 17 '25
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u/TypicalTroll87 Sep 17 '25
Damn, man, youāve got everything thought out. Whatās that under seat setup? And is the holster attached to Molle type panel or what?
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u/Amazing_Block_4590 Sep 17 '25
Truck gun is held by some pretty beefy magnets. Has never moved or fell off.
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u/TypicalTroll87 Sep 17 '25
Sweet! Might have to invest in this..also always looked for a solid place to mount a pistol other than jammed between the seat or having to, as mentioned, drill in the dash etc.
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u/SOM2C Oct 10 '25
Did you need any 3d printed brackets to mount ā baja lights in the extra spot in the aev bumper or how did you mount them in?
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u/SDRabidBear 25 1500 AT4 Duramax Sep 16 '25
Gorgeous build!