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Got all my chrome wrapped to paint match, pinstripe delete and black badges. Looks so much better.

Black and red is definitely a great combo. Definitely don't need chrome in the mix to look great.

That AT4 looks great. I basically made a reg cab at4 clone.

i think im finally done for now. only things on my wish list are power retractable bed cover and bed rug 22 AT4 4inch CST lift stage 10 PISK kit 37x12.5 ridge grapplers 20inch ICON rebound +12 Bling King Grill insert Bac flip MX4

See video - just saw this pop up compliments of Eric O. of South Main Auto. I would IMAGINE that the grounding setup on the 2021+ SUV lineup is similar to the 2019+ truck lineup. https://www.youtube.com/watch?v=8CFZcO4NDhI

That was some great detective work. Reminds me of a problem I had with a 2008 Chevy Suburban. The left turn signal would stop working. It went into the dealer 3-4 times (including 2 overnight stays) at a cost of $1200+. They had replaced the body control module and the fuse box (2x) and the problem still wasn't resolved. I finally decided to take the time to diagnose it myself. The problem turned out to be a sharp corner of metal on the fender well poking in (and shorting) a wire in the harness coming out of the fuse block. I padded it with rubber insulation and the problem was solved. I posted my findings somewhere (I think in the forums here).

Badass American machine.

Thanks to this post, put them on my 23 2500. Appreciate the thorough write up! Took me about 4 hours start to finish.

that sux, fortunately it does not look like any structural damage should be an easy fix if parts are available

I wonder if this will effect the fuel gauge like it does on the 2500/3500? I would rather have a working gauge than a larger tank.

Finally got the new wheels and tires on my truck today. On a side note, does anyone know of a good speedometer calibrator I could purchase?

UPDATE.....I picked up my truck yesterday afternoon after having the transmission valve body replaced and it looks like that did the trick. The transmission temp got as high as 142 yesterday and even went down to 138 at one point. I am excited, I feel like I finally have the new truck I ordered after having it for 4 months. I hope this is the fix for the others on here having similar issues. If anything changes I will post another update.

Its hard to get a torque wrench in tight areas for spark plug tightening, so I generally go by feel. When you are loosening them, keep a mental note of the pressure you applied to loosen them then try to snug up the new ones as close as possible. Its not very scientific I know, but I've changed A LOT of spark plugs over the years and I have never had an issue with over tightening them or having any get loose.

RekGen mud flaps installed

I just posted a question on a very similar set-up.. Are you running 35's on this? If so, how much trimming did you have to do and does it still rub? I have 35's on 22" Fuel Blitz with a -18 and it rubbed really bad.. Looks great by the way!

Added running board lights tied into the puddle lamps.

2021 custom, put some 0 offset wheels from black Mamba, tinted er up, cut the factory fog light blanks to fit some baja design pods but just switched em out for some nightrider jet black series pods, and put cougar motor leds in the headlights

Tinted the windows on the green house.

Old thread, I know, but I used the grommet by the drivers door. Very easy to get to both inside and out.

A new Leer cap, removed 4x4 and cap labels. Also installed a dash cam.

3" superlift. 1.5" rear blocks. Differential spacers. 22x10 vision wheels. 22x12.5 tires -19 offset. Sent from my SM-A705U using Tapatalk

I just put the 3” blocks in the back. Perfect ride height now. Sent from my iPhone using Tapatalk Pro

Finished up the CST 4” lift over the weekend. A bit of a chore to get it done but love it and drives great. Took about 14 hours on and off with helpers. The cSt kit didn’t raise the rear enough with the 2” blocks so I will be raising it more with 3” blocks tomorrow. As it sits, the front is about 1” higher than the back. I have a heavy slide-out in the bed with tools so it drops it about 3/4”. The blocks will bring it back up. Today I had new fuel sledge rims (20”x 9” 20mm offset) wrapped in 37”x12.5” BFG K02. Very minor rubbing on the front of the wheel well liners which I took care of with zip ties. The space between the mud flap and tire at full lock was a little tight so I heated them up and molded back a bit. I’ll take more picks once I bring the rear up. I included one pic of the lift before the wheels yesterday in my shop. Sent from my iPhone using Tapatalk Pro

Want to get the Amp Steps but the stock one can minimize door dings. Sent from my SM-N975U1 using Tapatalk

Smoothed and painted mirrors

Truck is filthy from our Florida rain

Got the fender molding painted and frosted fender lights

Two more since we're limited on file size. Head to head with a brand new F-250 Lariat FX4 for comparison. My truck looks like it's in a different league now.

Finally took some decent photos of the truck after the new lift and boots! ReadyLIFT 3.5/3" SST Lift (comes with Bilstein shocks) -- huge ride quality improvement over stock Banks Derringer (badass little multi-gauge) 35x12.50x22 Nitto Ridge Grappler tires Fuel Blitz 22x10 -18 wheels *Note that the truck isn't on even ground, so the gaps aren't how they normally look. It's got a slight rake forward, but a much more level look overall.

2020 GMC Denali 2500 HD Duramax 2500HD L5P So far I have done 3M Paint protection. Ceramic Coated Paint. Tinted Windows and Marker Lights. Some chrome delete. Lopro soft roll up tonneau cover. DPF back exhaust. 9"x 20" black iron wheels +18 offset with 295/65r20 nitto terra grappler G2s. Stock suspension with front torsion bars turned up 3 turns. No rub and rides excellent. Let me know what you guys think? Next things on the list include more chrome delete and a banks derringer tuner.

Now just have to wait!!!! Sent from my iPhone using Tapatalk

Thanks for the reply. I just ordered some weatherstripping off of Amazon and I’ll see how that works out. I’ll update you with what I used if it solves the issue. Here’s a pic of my truck so far. Still waiting on the bed cover and frosted fender lights, but installed the tool box and console safe already. Sent from my iPhone using Tapatalk Pro

After a long backorder, I got my color matched fender flairs delivered and installed. They look really good IMO. I may smoke those side markers out eventually, but going to keep them for now.

Got the wheels and level on today. 20” Fuel Rebels (Anthracite) wrapped in Terra Grappler G2 35’s ProComp 2.5 level

I’ve had the truck one week today. Base model duramax crew cab 4wd SB. So far I’ve done: Debadge, other than GMC on rear (replaced with vinyl) and front of course Chrome delete (Vinyl Wrap) Tint: 15% on sides & rear, 45% on windshield). Smoked mirror lights, side markers, and third brake light Wheels and level go on next week - 20” fuel rebels wrapped in nittos. Handles and side / bumper steps color-matched within 2 weeks. More pics to come soon.

Thank you! We drove it 900 miles home to Florida from Illinois and loved it. I thought my girl would hate me by the time we made it home, but the ride was NIIIIIICE. Maybe the Fox 2.0 shocks make that big of a difference, but this is my first lifted truck with big wheels and first 2500 and I am absolutely over the moon! Pull the trigger, you won't regret it! Oh AND it fits in my garage [emoji13] Sent from my SM-G988U1 using Tapatalk

2020 GMC Sierra Denali Ultimate 2500 HD with a Turbo Diesel, 5 inch Zone lift, Nitto 37" Terrain Grapplers, Amp XL powered boards, color matched fender Flair's, rear LED and Kicker tailgate speaker package, 50% ceramic 3M tint on the windshield and rear, 20% on the front, Horn Blasters 2485 nightmare dual tank kit with spare tire delete and 8" drop hitch. Try saying that 10 times fast lol. Phase 2 is a front bumper swap (painted to match) light bar, 12,500 lb wench, roll bar, LED pods. I am beyond blessed, and thankful to God every day! Sent from my SM-G988U1 using Tapatalk

Chrome delete process, to blackout the toe hooks or not? New KMC wheels. Bed cover on its way. Amp power steps are next.

Got some new wheels 20x9 +18 ultra wheels

Nah I had sticker on 1500....this is domed black letters...looks a bit more factory imo, though for some reason " ET" looks crooked in pic.....she is dirty girl right now, needs a bath

https://r.tapatalk.com/shareLink/topic?url=https://www.gm-trucks.com/forums/topic/238565-my-upfitting/&share_tid=238565&share_fid=33003&share_type=t&link_source=app My upfitting Done alot to my truck in 2 weeks Sent from my Moto Z (2) using Tapatalk

Got it tinted yesterday and loaded down with toolboxes and air compressor today 35%on the windshield 20% over back 3 and 5%on front 2 surprisingly it didn’t squat any when i put the pack rat and montezuma in it. Sent from my iPhone using Tapatalk

Just got mine last week and put some new shoes on. 285x65/20 Grapplers...basically 35x11.50’s.

I picked up a 48PG battery today and installed my three-fuse modification. The original negative auxiliary battery cable 84354708 seems like it would never be delivered, so I picked up 22846471 (at about the same price) and removed the sensor. This one gives an additional ground lead of decent gauge that can be used for accessories, which is even better. I've replaced the 175A fuses with 250A as a preparation for a 3000W inverter running off of the aux battery. I will post pics once the battery lays down in the next couple of days.