Here is a drone shot of my travel travel with my old Silverado. We camp along the glacier-fed waters of Flathead Lake in Montana. Just not in winter!
🏆 THAT IS A WRAP FOR THE OCTOBER 2026 AT4 OF THE MONTH PHOTO CONTEST! We have joint winners (AGAIN!) — @11Bravo and @pinebaron both finished with 11 votes. Congratulations to...
Ordered a 2027 AT4X with Duramax yesterday. Expected delivery date in January. First time AT4 owner. Long time GM truck owner. Interested to hear feedback on new 2027 AT4x and AT4. Also...
GMC AT4 Camping & Traveling
5
Nice, sounds like fun! Leaves have turned out here and they’re falling fast. Last few weeks of leaf clean up for me. Took the Scouts rock climbing last weekend in central Oregon at Smith Rock...
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I like banks and I am a customer having installed their trans pan, diff cover and intake but to me this isn't an issue and the job is a true pain in the @$$ not worth the hassle. I'd rather have...
Hello all! Been on here a couple months now and just getting a chance to say hello to the AT4 team. I had a '23 AT4 6.2 I ordered new and really liked it, I had zero of the known issues. I decided...
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Sorry I'm dumb as f--- with guns; looks like a gatling; what do I know :unsure: Nevada will cure that! 🤣 I am thinking the new Tisha suppressor is what you are thinking is looking like a Gatlin...
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Well guys maybe worried for nothing, finally got wheeler loaded and measured front fender to ground to back and only 3/4 in sag, several inches away from bump stops and rides good. Thanks for the...
Hey all, just put an order in for a ‘27 3500 AT4 with the 8.3L. I’m coming over from a ‘23 Ram 2500 Rebel gasser. It’s been a great truck but I need something with some more “oomph”. We live full...
GMC AT4 HD Introductions
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welcome and REALLY interested in hearing about the 8.3!!! I really want one but have no need of it.
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I have the Access truck pockets that have been followed me to new trucks 3x. They are very simple, priced right, and work better than you would think. You do have to drill though...
Welcome Read some of your posts the other day. Nice truck. I really wish they offered some of the AT4X features on a 3500, especially the 18” wheels and the AEV bumpers. The bumpers are probably...
GMC 1500 AT4 Problems and Issues
15
I have great success using this First waffle micro towels You get them at harbor freight Now 8 oz distilled water 8 oz rubbing alcohol 1 teaspoon of white distilled vinegar In any spray...
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It’s just one of those combinations, ya know? Let’s see what you got! Chasing Black Tail Deer in the Coast Range.. Lugged the Marlin 1895 SBL I love talking trucksnguns...
All clean and ready for the dirt!!!
Coyotes, year round. 220 swift... Boogie men, year round. HK CC9... Fun, year round. Anything that explodes. .. Just got a new can for 556...
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GMC AT4 Camping & Traveling
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Finally going camping for the first time this year. 🤗 it’s been a while but worth the wait.
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Beats the humidity. It was a hot summer and camping in the south is miserable most times. Not to bad this week but we are camping at lake Lincoln in Mississippi and the weather has been great. And...
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GMC 1500 AT4 Talk
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Heck yeah! I’m considering this or the K&n. I always get weird with mods like this while under warranty, you worried at all? I’m not worried about it. I added the PPE resonator delete too.
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🎙️ Update #10 5 days on the clock, 3 photos in the field. 📊 How it stands right now #MemberVotes 1pinebaron9 211Bravo6 3sbk12rs2 👑 9 updates in a row at the top for pinebaron. That is some...
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GMC 1500 AT4X
9
AEV is the only one for the 2023+ AT4X when they added the AEV front bumper the flares were changed and stick out slightly more than the other trims. If you have 2022 AT4X they have the same...
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GMC AT4 HD Introductions
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GMC AT4 HD Talk
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Enabling or Changing Security Lock Type Tap Settings on your infotainment screen. Scroll down and select Security. Choose your desired lock type: Pattern, PIN, or Password. Enter and confirm...
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A new member asked about ceramic products recently and another asked about paint protection products. Thought that is something I haven’t seen much about on here and may be a good topic. Just...
GMC AT4 Camping & Traveling
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Camping in October? You waiting out the humidity down there? Lucky out here in the PNW. Just warm or kind of cold, not much else. Beats the humidity. It was a hot summer and camping in the south...
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Nice, sounds like fun! Leaves have turned out here and they’re falling fast. Last few weeks of leaf clean up for me. Took the Scouts rock climbing last weekend in central Oregon at Smith Rock...
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GM ☀️ 4FAM, Happy HUMP DAY all! Installed and in love (BAKFlip MX4 Truck Bed Covers & SWINGCASE Toolbox DS configuration). Next up Molle panel (passenger princess...
GMC 1500 AT4 Talk
4
I took it to the dealer with 14.5k miles on it to get a new motor. 2025 3.0 LZ0 with a thrust bearing failure.
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Jean Dry Lake. Last visitors dumped junk and trash we cleaned up and hauled off to dumpsters in Jean Nv: During the Mint 400 race organizers sponsor a desert clean up event the wife always...
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Proud new owner of a ‘23 1500 AT4x. Purchased with 42k KM on it. Might not be the newest but I’m proud of it. Looking forward to adding to the appearance of it!
GMC 1500 AT4 Talk
8
Picked it up with a working driver’s heated mirror … at least for now 😂
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185 is creeping up in Texas? Mine trans runs at 195/196 once it's warmed up. here in PA, year round. I think the bypass will keep it from warming up a little longer but at the end of the day it...
Hey everyone, New owner and new user of the Yukon. So I’m sure I’ll be in here asking and researching new additions and questions.
The new truck with the old travel trailer. Looking to move to a fifth wheel in the future.
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GMC 1500 AT4 Purchasing
12
Dirt King (went billet since it wasn’t much more). Off-road desert guys in southern CA. Almost went with Baja kits or mazzulla but didn’t want Heims. They’re all basically the same If going...
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Welcome. Any issues with the '21 6.2 engine? Not at this point and the VIN is not in the service notice range if VIN #s affected, but I run 0-40 synthetic oil in mine as well
Collecting junk and trash others have left in the campsites. There’s a dumpster a few miles away we’ll feed this to:
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Greetings from the Heart of Dixie. Wednesday evening, I traded in the Yukon for a brand new 2026 1500 AT4X in Coastal Dune with the 3.0l Duramax. I couldn't really be happier. I absolutely love this thing. I had been missing my Ram...
Did some Plastidipping on the back end. Unfortunately the plastidip didn't come off cleanly on the 4 so going to have to do that again (I wanted to expose the red but remove...
Just to update for anyone interested I finished painting and installing the hood scoop, I know its not everyone's taste but I like it. I did Thunderstorm gray on the outer piece and gloss black on...
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Got some new (well overdue) tires. I installed a 2.0 SST last fall but didn't want to spend the coin on new tires at that time. On Friday I had 285/75/18 BFG KO3's installed. I was prepared to do...
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The dealer couldn't get me a ZR2 with the 6.6L because of constraints, so I went with an AT4X instead. Should be going into production this week.
GMC AT4 Talk
7
Looks like the camera feed plug for one of the 2 cameras in the third brake light. If you don't have them then the plug would be empty.
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Did some Plastidipping on the back end. Unfortunately the plastidip didn't come off cleanly on the 4 so going to have to do that again (I wanted to expose the red but remove the chrome). Thinking...
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GMC 1500 AT4 Purchasing
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I've got an order for a '27 AT4X (Sterling Metallic with the 6.6) to replace my '24 AT4X. My current TPW is 11/29, so I'm hoping it'll arrive sometime around the end of December.
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I can't speak for other members, but I don't add stickers to the exterior paint. Now under the toolbox lid? Oh hell yeah... I would use what you have on top of your site. I dig the opposing...
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GMC AT4 Talk
13
Welcome. As Clint would say... "Do you feel lucky?"
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GMC AT4 Talk
14
My wife’s 6.2 completely shit the bed at 11,000 miles. She spent three months in the cheapest rental they could find while they replaced the engine. Love my 3500HD, but that 6.2 can get bent. No...
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Trying one of these weather tech hood protectors, jury is not out yet if I like the look.
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Here goes! I'll start it off this time with my favourite photo of a few pieces of all weather recovery gear I installed on the rear of my truck. Ready for almost everything on the road.
Just finished installing the S&B Cold Air Intake and test driving. Install was pretty smooth. The pipe to the turbo was tight but got it done. First impression when driving is...
It’s going to be triple digit 107F heat at the house so we once again hooked up the travel trailer and headed to 60’s F Jalama Beach. Stopped off at the Tesla Oasis for a charge and a Tesla...
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Added the Diamondback Switchback cover. Got it from their outlet page so I saved a few doll hairs. Didn't picture myself as a cover guy, but I'm seeing benefit of having a protected bed. Like a...
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Hi all, Been a minute since I joined a vehicle-specific forum, but here I am! I just got rid of my 2017 1500 All Terrain and bought a 2025 1500 AT4 in Thunderstorm Grey. I'm excited to make it...
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ZZ2
7
Excellent. Now we need a night vid! Unfortunately, the customer just took off, so I won't be able to get that video. However, I actually drive a Silverado EV with the ZWAGZ system installed, so...
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GMC 1500 AT4 Problems and Issues
8
2024 at4 no power in truck no start 12V on battery stuck in park OnStar tried to fix over the air didn’t work. dealer picked it up on a flatbed, took the shop ran diagnostics no codes disconnected...
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GMC AT4 Camping & Traveling
9
What part of CA are you from that is getting triple digits in Oct? I was in Corona, Riverside, San Berdo and lake Arrowhead in the mid 80's and don't remember temps like that. Simi, it was 107F...
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Got mine from moose knuckle. Real happy with em because the size, and the split so they open up easily. Also they’re sort of locked on there and can’t be taken off without a special tool.
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We've traveled from S.Illinois, to Spokane, WA towing r 37ft travel trailer. Lately, there was a couple times my mind said, "sounds like its turning over a bit slow..I wonder if there's a battery...
GMC AT4 HD Problems and Issues
12
just replaced mine on a 22 3500 HD AT4 after similar issues. Batteries are not what they used to be, 5 years is life expectancy usually and that equates to about 40-50k miles too. theyre awkward...
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GMC AT4 Talk
13
Going to sell my 2024 and get 2027 to have the Super Cruise (75% Freeway Driving.) Love my Thunderstorm Gray but they discontinued. There is a tan that looks a bit like something from a newborn...
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ZZ2
15
Big surprise at the office today and perfect timing for the AT4 community! We just wrapped up an installation (15 minutes) on a GMC Sierra 3500 AT4 featuring the ZWAGZ kit. If you're looking for...
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Put in a little toolbox last week finally. Threw in my tow straps, tool bag, jumper cables, and my floor jack. Found a cool aluminum mount for the jack on Amazon. Keeps the...
Been a Silverado fan for years, but made the switch to GMC and got a new 2026 AT4X and couldn't be happier. Truck rides and looks great. Already found great posts on here and...
GMC AT4 HD Problems and Issues
4
I got both batteries in this AM and cleared a bunch of codes that co e along with that and she starts quick now!!
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Confirmed Winners! 🎉 All checked and verified down the sequence! Here is our confirmed winner with a valid photo entry: #12: @pinebaron (Winner) Congrats! I'll reach out via DM in a sec to grab...
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Confirmed Winners! 🎉 All checked and verified down the sequence! Here is our confirmed winner with a valid photo entry: #12: @pinebaron (Winner) Congrats! I'll reach out via DM in a sec to grab...
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🏆 THAT IS A WRAP FOR THE SEPTEMBER 2026 AT4 OF THE MONTH PHOTO CONTEST! 🥇 We have joint winners — Cocoabean and jessegetslost both finished with 9 votes. Congratulations to both. #MemberVotes...
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With the black center piece, none of this is actually installed yet.
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In my opinion, no. I've had many a set of braided lines on my street and track cars and honestly really can't feel any difference. You want better braking, get better pads, and change your fluid...
GMC 1500 AT4 Modifications
10
I'd only consider it IF I had to replace my brake lines for some reason. 40+ years of driving and have never had to (I know I just jinxed myself!) due to failure. The lines are only as good as the...
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GMC 1500 AT4 Modifications
11
I've only seen this upgrade needed for high performance vehicles that use a lot of heavy braking. These cars and behaviors can cause more heat in the fluid and lines which can cause expansion or...
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Similar issue has been brought up several times on this forum... Some common themes from my years of experience: -jack up the truck. Spin the wheel by hand and see if it makes any noise. Take the...
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📣 Update #5 Still wide open — 3 photos in it, and 6 days to go. 📊 How it stands right now #MemberVotes 1Cocoabean9 2jessegetslost8 3ltglenn136 🚨 New leader! Cocoabean is past...
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GMC AT4 Talk
14
Next time hit the brake pedal firm/hard and let up. Seems to engage the exhaust brake better. I turn it on all the time.
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Tried painting and installing a cheap third brake light cover to get rid of the red that doesn't match anything else on the truck. Didn't really work out like I had imagined in my head. If you...
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We normally pull the boat out of the water in November, but we have a busy next few weeks and with the price of gas at the marina's..... time to pull her out and get her ready for her winter nap. My truck loves towing it, its a shame I...
Alright, I will keep it going! Today, I finally installed the hardware to complete my on-board air. I tow a lot of different trailers, always rotating my tires (60psi f/80...
I just got a 2026 AT4X HD and am loving it. My AT4 1500 was stolen from my driveway so i figured it is time for an upgrade. Glad to be here and look forward to learning and...
I finally did the SDHQ brackets and the BAJA Designs XL80 ditch lights.. still need to adjust the angle. Tied them into the upfitter switch.
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Thought I would post a couple of clips from my mangoal dashcam, front and rear, of a near miss I had last month. This is mainly to show the clarity of the video that the dashcam captures, but...
I didn't care for the chrome badge on the fender since I changed all the other lettering over to the blacked-out lettering so I changed the badge. I found these on Ebay for $88 and saw them on...
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GMC AT4 News
7
But will it have an oil dipstick?
Hello all, I am a newish owner of a 2026 Sierra 1500 AT4X (non AEV) in Sterling Metallic. Absolutely loving the truck so far, and have learned a lot from lurking here. So far I’ve done the Range...
I’m Dan, live in Millcreek Utah. I’ve debated if I would enjoy a truck for years, and finally decided (because we actually needed another vehicle) to pull the trigger and get into the canyon. I’ve...
I've been looking at your cam for sometime now. lots of highway driving in Austin TX with some off road and ranch roads. Leveling kit fuel rebel wheels toyo at3 295's upgraded audio/ tint PPE...
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https://gmauthority.com/blog/2026/09/gm-8-3l-v8-duramax-diesel-output-revealed/ 555hp and 1230 ft*lbs of torque. Also "In addition to the new diesel engine option, GM says that its upcoming 2027...
From the dove opener earlier this month. *AI enhanced editing
Hey AT4 Forum, To celebrate our Anniversary, we're running a quick giveaway for 1 free Mangoal 4K Front / 2K Rear STARVIS 2 Dual Dashcam (covers '22-'26 Sierra 1500 & '24-'26 Sierra HD) with free...
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I think the amber DRLs and the GMC is starting to grow on me.What do you guys think?
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It was time for differential fluids again, so changed the front cover out too. Banks out back. Going to be honest, there is no real benefit. It may cool faster (if I was doing 120mph maybe)...
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So... update.... turns out it wasn't the transmission. The aero louvres were engaging and rubbing on a horn bracket causing the clunck. I guess there is a service bulletin on this too. Anyhooo...
ZZ2
8
We’re excited to announce that ZZ2 has joined the AT4Forum.com community as a Supporting Vendor! Take a few minutes to explore their lighting products and see how they can help upgrade your...
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2022 1500 AT4 3.0l Duramax Titanium Rush Ready Lift Leveling Kit Icon Alloys Compression 17x8.5 -0 offset Toyo Open Country ATIII 35x12.5x17 GatorTrax Tonneau Cover
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Got a few hours to myself this weekend and was able to accomplish: 1. Molle Panels: happy that this ended up being less complicated than I thought (so many forums gripe about the panels not...
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Update! I went with the another unit from 404 parts and it didnt even last a year. I am trying the venom switchback unit and I am loving it so far! Lets see how long it lasts!
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GMC 1500 AT4 Photos & Videos
12
Hi everyone, New to the forum as I just picked up my 2026 Sierra 1500 AT4 on Saturday. Love the truck except as I drove it on the weekend, it kept making a "clunk"/"thud" on the down shift...
No where as nice as a decked drawer system but its a fraction of the cost. It has a ton of totes of various sizes tucked away under the platform. I like that its almost level with the split gate...
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GMC AT4 News
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