Jump to content

2021 Silverado single exhaust to dual exhaust conversion

Steven Vona
 Share

Recommended Posts

Steven Vona Enthusiast

Steven Vona

Posted
  • Author
Posted

So I got the exhaust put on.  Not a fan.  More importantly my wife hates it and she has to sit in my truck for long drives (2-4 hours) every weekend.  So now I am weighing my options.  

 

I was thinking about offering a 1 to 1 swap with anyone who wants the exhaust for their stock exhaust.  Do you think anyone will take it?  

 

Anyway, thanks for all the help on this thread.  Unfortunately it doesn't look like it's going to work out.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted
14 minutes ago, Steven Vona said:

So I got the exhaust put on.  Not a fan.  More importantly my wife hates it and she has to sit in my truck for long drives (2-4 hours) every weekend.  So now I am weighing my options.  

 

I was thinking about offering a 1 to 1 swap with anyone who wants the exhaust for their stock exhaust.  Do you think anyone will take it?  

 

Anyway, thanks for all the help on this thread.  Unfortunately it doesn't look like it's going to work out.

Just change the muffler. There’s many options.

Steven Vona Enthusiast

Steven Vona

Posted
  • Author
Posted
32 minutes ago, KARNUT said:

Just change the muffler. There’s many options.

I thought about that.  But I don't want to get into a thing where there are issues with droning, or loss of power, or whatever.  I still have the stock muffler but I have heard a lot of people say that when you use the stock muffler without the resonators it creates drone in the cab.  Honestly, this has turned from something of enjoyment into a nightmare.  But the wife has a point.  Her and the kids have to sit in the truck also.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted
3 minutes ago, Steven Vona said:

I thought about that.  But I don't want to get into a thing where there are issues with droning, or loss of power, or whatever.  I still have the stock muffler but I have heard a lot of people say that when you use the stock muffler without the resonators it creates drone in the cab.  Honestly, this has turned from something of enjoyment into a nightmare.  But the wife has a point.  Her and the kids have to sit in the truck also.

My wife was that way 40 years ago. She got a hot rod subscription to learn what made me a car enthusiast. She now drives a sports sedan and has a collector car. My kids were exposed from birth. Louder exhaust is one thing, nobody likes drone. If there’s room a simple addition of a glass pack ( resonator) would help a lot. As I got older a free flow muffler and resonator was a must. My 14 was the last I put exhaust on. I left the resonator and tuned out the cylinder deactivation. 

Steven Vona Enthusiast

Steven Vona

Posted
  • Author
Posted

My wife has zero interest in cars as anything other than a means of transportation.  I need to buy a third car to play with... :)

 

So I am hoping someone is open to a 1 to 1 trade.  I really don't want to pay another $1000 for a stock exhaust.

Diamond817 Enthusiast

Diamond817

Posted
Posted (edited)
48 minutes ago, Steven Vona said:

My wife has zero interest in cars as anything other than a means of transportation.  I need to buy a third car to play with... :)

 

So I am hoping someone is open to a 1 to 1 trade.  I really don't want to pay another $1000 for a stock exhaust.

Have you looked on Craigslist and FB marketplace in your area? I usually see them for around $300 like new all the time.

Edited by Diamond817
Steven Vona Enthusiast

Steven Vona

Posted
  • Author
Posted
55 minutes ago, Diamond817 said:

Have you looked on Craigslist and FB marketplace in your area? I usually see them for around $300 like new all the time.

 

I have been looking since you mentioned that the first time.  I am keeping my fingers crossed.  I will still have to sell the Borla exhaust so I figured maybe someone who doesn't have a wife would want to swap! :)

Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted
1 hour ago, Steven Vona said:

 

I have been looking since you mentioned that the first time.  I am keeping my fingers crossed.  I will still have to sell the Borla exhaust so I figured maybe someone who doesn't have a wife would want to swap! :)

Since you have the stock muffler I would cut the Borla muffler off and go get some exhaust band clamps and put the stock muffler back on and see what you have in sound then have the muffler shop weld the stock one back on. Or just have the shop do it.

DemonWorks Enthusiast

DemonWorks

Posted
Posted

Mine is a diesel, but the dual exhaust is very similar. My video shows quite a bit as to what you will see and need to do on yours.

 

 

  • 1 year later...
John Planas New Member

John Planas

Posted
Posted

How did you make out with the conversion? I am doing the same thing and just ordered the exhaust shield, hardware and a new bumper for the dual exhaust. With the dual exhaust conversions, did you have to purchase all new hangers? If so which ones did you get? I appreciate any advice. Thanks again.

John

Diamond817 Enthusiast

Diamond817

Posted
Posted
5 hours ago, John Planas said:

How did you make out with the conversion? I am doing the same thing and just ordered the exhaust shield, hardware and a new bumper for the dual exhaust. With the dual exhaust conversions, did you have to purchase all new hangers? If so which ones did you get? I appreciate any advice. Thanks again.

John

You have to get the 2 rear circular exhaust hangers. 

 

I'm got 40k MLS on my dual exhaust with no heat shields and no spare tire problems. Just saying.

John Planas New Member

John Planas

Posted
Posted
21 hours ago, Diamond817 said:

You have to get the 2 rear circular exhaust hangers. 

 

I'm got 40k MLS on my dual exhaust with no heat shields and no spare tire problems. Just saying.

Great information. Thank You

  • 10 months later...
Jn71956 New Member

Jn71956

Posted
Posted
On 5/4/2022 at 6:02 AM, newdude said:

 

 

Dual exhaust heat shield is 84535834.  This will replace the one you have in your truck entirely.  The dual exhaust shield is a one piece half moon shape if you will, not two individuals.  You might need one of 11602085 nut and 3 of 11611334.    

Hey there, would you happen to have part number for the bolts that go with the exhaust hanger bracket? Thanks

  • 4 months later...
pgamboa Senior Enthusiast

pgamboa

Posted
Posted

I’m looking to do this on my 2021 - Silverado LT - 1500 2WD truck.  I recently grabbed a bumper in black from a local guy. @newdude thank you for all you do sharing valuable info. 
 

Reading this, I’m starting to think it might be a PITA lol. 
 

The goal was to get a black bumper and chrome delete it. Ended up with the dual HDMI port bumper and thinking maybe I go with a single exhaust. 

  • 3 weeks later...
Mack10290 Enthusiast

Mack10290

Posted
Posted (edited)

I just did this a few months ago. Here's the way mine went: I got rear-ended in the car wash 2 days after Christmas. Only damage was the rear bumper was dented, so I opted to go with an aftermarket bumper with black dual exhaust tips included from LKQ. The other guys car insurance paid for new bumper and installation minus $200 for the upgrade. I then went to a local muffler shop and they did all the exhaust work custom and I got a Flomaster muffler. They made a custom hanger and said I didn't need a heat shield. Total cost at the muffler shop was around $700. Sounds great and looks great I love it! It's not extremely loud but has that throaty rumbly sound. Wife is not an auto enthusiast but doesn't mind the added sound effects.

 

 

GMC Sierra Update 3-3-25 B.jpg

Edited by Mack10290

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

    • Buckwild27
      Gas Prices

      By Buckwild27 · Posted

      I agree. 
    • Atlas
      Gas Prices

      By Atlas · Posted

      87 down as low as $5.14 here... winning!
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Progress... sort of.   Intake is disassembled, spider is out, fuel lines removed. Used a torch on the stripped screw with the lower intake off, much easier when I've got the intake sitting on my workbench, I made it talk. Walked right out with a pair of vice grips once it was nice and toasty hot.   New parts are piling up on my service cart waiting to be installed. Distributor, temperature sensor, new gaskets, fuel line kit, themostat, water neck.   My new pickle is I don't want to spend $600 on a replacement spider. I'm not sure IT is bad. I'm probably splitting hairs. Or it's $300 to send mine away and another 3 weeks of the truck just sitting. I have half a mind to assemble everything with the old spider to see if I can get away with just replacing the fuel pressure regulator to be safe. The obvious issue was the gushing high pressure fuel line which will be replaced. Getting to the spider really isn't that hard, and now I know what I'm doing , swapping it would be a breeze should it absolutely need one. Stupid, or smart?   The part that gives me pause is replacing the distributor. Well, it's already out. And I didn't mark it, whoopsie! Engine was at TDC when I removed it, I know that, so upon correct reinstall the metal tip on the rotor should point to the TDC mark on the distributor because that's where it was pointing on the old distributor. Worst case I'm a tooth off and have to re-stab it.   But then, what? I assume the truck will start. It doesn't appear the timing can be set. Here's the problem: These distributors can't be rotated but a degree or two, by design. What I read is Cam ****** needs to be -2 to +2 degrees, ideally at 0 (and checked/set above 1000 rpm). There should be enough wiggle to get that properly set, but checking the reported value is another potential issue. My Actron 9185 scanner says it supports enhanced GM PIDs and Cam ****** is one of them but it's unclear that I'll be able to correctly see it over OBD 1.5. I can see why people end up junking these things with life left in them. They're an absolute nightmare with tweener-year diagnostics/electronics and unobtanium parts.   Fingers crossed it starts and idles nicely. There can be hope, right? I'ma buy a lottery ticket the same day just in case.   Next steps..DO IT. I have not installed an intake before so I've been reading and watching a lot. Some say NO RTV except on china walls, some say DO RTV on water ports but not fuel/air intake. 1/4 or 3/8 bead on China walls? I think my strategy will be, obviously, RTV china walls with overlap on the gasket corners. Chapstick-style RTV the water ports. Leave intake ports dry. The only set of intake gaskets I could find locally are Edelbrock performance gaskets (uh...for an asthmatic 190hp V6? LOL) so we'll see how they do.   #NoToolLeftBehind. It took an hour, but my recovery mission for my deep 10mm socket was successful. It had rolled down the bellhousing and wedged itself between what I think are the fuel lines? I couldn't see it at all, but with a junk antenna I had laying around, I blindly went poking/sweeping for it, heard it clink, raised the truck, and caught a sliver glimpse of chrome with a flashlight way up there in Narnia. I had pushed it farther along the lines holding it captive, but within access of severely improvised tools, poking and cursing at it to finally knock it free to where I could get a fingertip on it to bring it home.    Not much to see.      
    • RyanbabZ71
      Gas Prices

      By RyanbabZ71 · Posted

      Thats crazy considering im right next door (Indiana)
    • Black02Silverado
      New Retail & Commercial Promo

      By Black02Silverado · Posted

      For a limited time, retail and commercial accounts receive an AMSOIL Vinyl Tool Tray with their order of $500 or more when they use code TRAY726 at checkout. The promotion runs through July 21, 2026.   Order at https://syntheticadvantage.com   Want to use AMSOIL in your business or sell at your store, apply here.  https://www.amsoil.com/business-opportunities/?zo=521390  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...