What have you done to your AWESOME AT4!.....

[RLCC]

Have had the AT4 since Jan 2019, and love everything about it.  2 weeks ago finally got some new rubber for it.  Wish I had done on day one, truck feels so much more planted to the road, rides even better and looks better.  Went with BF KO2 285/65/20, no rub at all and did no mods.  Now to decide if I had the RC 2in level to it, have it just havent done yet.  If do the level might add new blocks in rear to keep some rake.

[tvette1993]

2020 AT4 - 3.0L Duramax, 

Upgrades:

• 275/60 20 BFG All Terrain K02
• 10" Kicker sub under the back seat w/ bass control knob
• 20% Tint 
• Warning lights in the grill and back window
• Truxedo Low Pro Tonneau
• Shovel Holder in the bed
• Multipro Tailgate lights
• 1" level motofab leveling kit
• Speedturtle flasher

On the list:

• Whatever other good ideas I see on this board

[Dali555]

Did some plastidipping and added b&w American flag to the front GMC and added grip tape to the side steps...

[OilfieldTrash78]

21 hours ago, tvette1993 said:

2020 AT4 - 3.0L Duramax, 

 

Upgrades:

• 275/60 20 BFG All Terrain K02
• 10" Kicker sub under the back seat w/ bass control knob
• 20% Tint 
• Warning lights in the grill and back window
• Truxedo Low Pro Tonneau
• Shovel Holder in the bed
• Multipro Tailgate lights
• 1" level motofab leveling kit
• Speedturtle flasher

On the list:

• Whatever other good ideas I see on this board

How do you like that leveling kit?  I am looking to level mine, but don’t want the issues that come with some of the bigger kits.

[Schmoe]

-GM Performance exhaust 

-debadged and rebadged 

-painted factory wheels two-tone (Kept the grey, painted polished chrome black)

-window tint

-BFG KO2 (Kicked the white letters out)

-step delete

-caliper covers

Edited June 14, 2020 by Schmoe

[Schmoe]

Have since deleted OEM AT4 tailgate badge

[Schmoe]

[tvette1993]

On 6/12/2020 at 9:42 AM, OilfieldTrash78 said:

How do you like that leveling kit?  I am looking to level mine, but don’t want the issues that come with some of the bigger kits.

I am very happy with the 1" lift. No changes in handling and easy to install. Any taller than a 1" level will make the front end higher than the back which IMO does not look great... 

[loud_pipes]

Don’t know how I missed this thread up until now. Sub’d.

2020 AT4, 5.3L, 10 spd trans. Bought December 2019, already at 11.8k miles. Mods to date:

*Lomax tonneau cover
* AntennaX 50 cal antenna
* Borla S-type catback exhaust
* GMC Accessories lockable center console
* Putco Blade 60” tail gate LED light strip
* ReadyLift SST +2 Lift
* MO970 Moto Metal wheels
* Atturo Blade XT 305/55/20 tires
* 2020 OEM GM Horizontal Cargo Truck Bed Net 84105423
* AT4 and Sierra gloss black badge inlay decals (Etsy, TVD Decals)
* EGR dark smoke in-channel window deflectors
* LoadTamer tensioning bed divider cargo net




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[J2Jones]

 

2019 AT4 6.2L

 

Here's the list of mods

• Bakflip MX4
• 2 coats Ceramic Coating applied
• Tinted front windows
• Installed Opt7 Tailgate LED's
• Blacked-out (plasti-dip) badges except for red "4's"
• Installed 'Rapture" style grill lights
• Installed 7” “shorty” antenna
• Installed Multipro tailgate LEDs
• GM Performance CIA
• Installed GM Factory black exhaust tips
• Borla S-Type Exhaust
• Calipers painted red
• Installed Nitto RG 35x11.5x20 (on stock wheels)
• Installed Undercover SwingCase Truck Bed Storage Box

 

 

Edited June 21, 2020 by J2Jones
Added a couple minor mods

[Benzo1]

2020 AT4 Duramax

- 285/75/17 Nitto Ridge Grapplers

- 17"x9" Icon Rebound 0 offset

- Removed 2" Rear Block to Level Truck

 

Chrome Delete Coming Soon!

 

[Kyle's AT4]

 
2019 AT4 6.2L
 
Here's the list of mods

• Bakflip MX4
• 2 coats Ceramic Coating applied
• Tinted front windows
• Installed Opt7 Tailgate LED's
• Blacked-out (plasti-dip) badges except for red "4's"
• Installed 'Rapture" style grill lights
• Installed Multipro tailgate LEDs
• GM Performance CIA
• Borla S-Type Exhaust
• Calipers painted red
• Installed Nitto RG 35x11.5x20 (on stock wheels)
• Installed Undercover SwingCase Truck Bed Storage Box

 
 

So you think 12.5s would fit. I did the mudflap delete.

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[J2Jones]

43 minutes ago, Kyle's AT4 said:

So you think 12.5s would fit. I did the mudflap delete.

Sent from my SM-G973U1 using Tapatalk
 

 

IMO, without a lift and other trimming, I don't see how 12.50's would work.  Maybe if you tied back other areas could be OK but I don't know what clearance to the control arm would be.  It's hard to get a feel for clearances under full compression.

 

I have/had very minor rub, only in the front on the drivers side when backing at full lock right.  That said the clearances are very tight.  I zip-tied the liner bracket pulling it towards the bumper last night and I believe the rub is gone.  I'm going to look at clearances closer this weekend and may zip-tie back other areas just to have more room.  It also depends of course on the wheels, use of spacers, etc.  I went with stock wheels and 11.50's because I didn't want to get into much in the way of mods and I don't really want to lift it.

 

[A016738]

On 6/3/2020 at 8:50 PM, jflan23 said:

Those lights are made by whelen engineering, pioneer slimlines. Idk about subtle, I had to cut the valence above the bumper into two pieces, but it was the best way I found to do what I wanted! The lights in the back are pioneer nano 6’s, also by whelen.

How did you wire up the rear step lights?  Can you just tap the reverse lights for power or do they draw enough power that it requires a relay to the reverse lights and direct wire to a power source?

 

thx!

[Jon coulson]

Here is mine 19 at4 2 inch RC level tinted windows JL AUDIO stealthbox and HD750/1 amp and lc2i. Not installed I have a set of 1552 turbo Mac HD wheels in 20x9 -12 gonna do 295/60/20 ridge grapplers