Jump to content

2019 AT4 - Mods

Taz56

By Taz56
in Modifications, Wheels & Tires

 Share

Recommended Posts

Taz56 Enthusiast

Taz56

Posted
Posted (edited)

I have a 2019 GMC Sierra AT4, 6.2L

 

I bought it brand new in July.

In July I added a Tonneau cover and wheel to wheel side steps. I also had 3M put on the entire front end.

In Aug I had a leveling kit installed and de-badged it.

In Oct I had my dash-cam and my radar detector hard wired and mounted.

In Nov I had a cold air intake and new Cat-Back performance exhaust installed.

In Nov still she will get 20" rims and tires (has 18" stock now) and 1.5" spacers to give her a better stance on the road.

 

More to come.

 

Edited by Taz56
  • Like 1
Ghblue New Member

Ghblue

Posted
Posted

Love it. I have a 20 AT4 black. I have the 6.2, but I’d like to make her sound better. I’ve seen people delete the muffler. Anyone have thoughts on this?  

Taz56 Enthusiast

Taz56

Posted
  • Author
Posted (edited)

Never thought of deleting the muffler, not legal in Canada. But on my 2014 I switched to a "Flo-Pro Twisted" muffler. Sounded GREAT. 

 

Edited by Taz56
paulny Enthusiast

paulny

Posted
Posted

My '19 AT4 had the GM CAI and catback sport exhaust installed as a factory option.  Honestly, it sounds amazing. I get compliments all the time and there is no drone at highway speeds.  I don't like an overly aggressive exhaust so this one is perfect.  Just something to consider as an option to muffler delete.

truck_newbie Enthusiast

truck_newbie

Posted
Posted
17 hours ago, Ghblue said:

Love it. I have a 20 AT4 black. I have the 6.2, but I’d like to make her sound better. I’ve seen people delete the muffler. Anyone have thoughts on this?  

Your mileage will vary with muffler delete or just muffler swap. I recommend a full-catback system. At this point, there are quite a number of options for the T1. If the Borla, Corsa, Magnaflow, etc are too pricey for you, you can try the more affordable options. Personally, i recommend the Gibson. It's more of a tamer exhaust but it was only about $500 and i love it. 

z1boss Enthusiast

z1boss

Posted
Posted
On 10/30/2019 at 9:19 PM, Ghblue said:

Love it. I have a 20 AT4 black. I have the 6.2, but I’d like to make her sound better. I’ve seen people delete the muffler. Anyone have thoughts on this?  

I have a Trail Boss and I installed an electronic cutout before the muffler and i absolutely love it.  No drone and you can make it loud or stock quiet with the push of a button.  When it is open, it's very deep and throaty.  Sounds like a modified corvette. See my post on this.  Instructions are halfway down the page and there are a few YouTube videos.

 

 

Taz56 Enthusiast

Taz56

Posted
  • Author
Posted

Just dropped my girl off. Cat-Back exhaust and cold air intake are going in as I type this....

Taz56 Enthusiast

Taz56

Posted
  • Author
Posted

275 / 60R20

1.5" spacer

 

IMG_7706.jpg

IMG_7716.jpg

IMG_7715.jpg

  • 3 years later...
Jmcclure0212 New Member

Jmcclure0212

Posted
Posted
On 10/30/2019 at 9:19 PM, Ghblue said:

Love it. I have a 20 AT4 black. I have the 6.2, but I’d like to make her sound better. I’ve seen people delete the muffler. Anyone have thoughts on this?  

I have 19 at4 6.2. Just had my exhaust done. Went cat back true dual straights. . Dual 2.5” pipe 4.5”x12” black tips. Dumped little past rear axle. Had the flat pipe under the trans cut out also has x pipe put in. 

  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • DaleB
      No Software Updates - Old Build

      By DaleB · Posted

      Hi all - my current truck is a 2022.5 1500 High Country 3.0. I bought the truck used last year. After doing some digging, I noticed that my truck's software is stuck on the original build from 2022. I have no available software updates. I talked to my dealer about this and they recommended not trying to force an update since the 36,000 mile warranty is expired. This is a big bummer since there have been many major releases since that have fixed small issues and improved speed/usability.   For reference, the current software build number is: full_gminfo37_gb-user 10 W158E-W164.4.2-QIH22B-563.3 158 release-keys Has anyone had a similar experience? Should I just forget about it and move on, or try a different dealer?
    • B07
      Needing this part.

      By B07 · Posted

      Sure. Buy it for me 🤣
    • B07
      Needing this part.

      By B07 · Posted

      Using zip ties but 2-3 they snap due to sharp edges. Just using a shoestring. Last longer. 🤣
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      I ordered the Snap On...waiting for it to come in later this week or early next week.   New front cover, new crank seal and new balancer are on. Water pump, pulley, fan, hoses, and plastics reinstalled. I can move forward knowing all my timing marks are dead on and the front engine is hopefully sealed better than it was. Take 2 with the water pump...trying high temp thread sealer on the lower bolts.   Rebuilt injector and new-new regulator is in, it looks like new. Top intake reassembled and all the bits are reconnected and snugged down.   Thinking about knock sensors again, I located both of mine and, there's your problem, Francis... The driver's side one is broke, plastic is bashed in, part of the wire is bare, and it appears to have been damaged like that for a long time. I saw the wire but didn't think anything of it. The knock sensor might not be my pulled timing issue, but it sure looks suspect. It must still be conducting, otherwise I'd expect a CEL. But perhaps with its sacred crystal inside exposed, jilted and dirty, maybe it's sending mixed signals. So I'm waiting for one of those and a new pigtail to come in. Pass side sensor looks good, except for the spark plug wire resting on it (!). The plug wires are healthy so it shouldn't be causing an issue, but I separated them and added zip ties to nearby looms to keep everything well apart.   So, I'm down to installing a knock sensor AND, oh, replacing the exhaust and cat. I actually think that's going to be fairly easy, it's all bolt-together, all new stuff from Walker is laid out on the shop floor ready to go. Hopefully have this thing on the road again for the weekend.   My luck? It will still be leaking oil, coolant, pulled timing, intermittent CEL for running rich, or it probably won't run at all -- because that's how this project has gone.   I've never worked on a vehicle so ...hurt? ...cursed? in my life. Everything has been effed with SO HARD, but I think...knock on wood...I've managed to undo all the backyard stuff and we're almost reset back to "just" an 80k mile, 30 year old Blazer.
    • PunchT37
      Would this CV Shaft be bad?

      By PunchT37 · Posted

      Yes. You need to check out that thing, and the hub further.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...