Jump to content

Exhaust Pipe

Tuktuk
 Share

Recommended Posts

Tuktuk Enthusiast

Tuktuk

Posted
Posted

Good Day everyone, 

hope you guys have an amazing day.

 

Quick question here guys, specially to all GMC sierra 1500 denali 2021 users. I just noticed it yesterday. Idk if its normal or not.

i started my truck yesterday in a cold weather and i noticed only ONE EXHAUST PIPE is working.

is that normal to all 2021 denali or not? 

I got Stock exhaust still.

 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Path of least resistance is likely the case here. You'll see this a lot on factory dual exhaust cars and SUV's too. The y-pipe section isn't exactly equal and the exhausts gases are going to go on whatever path is fastest.

 

If you revved the engine you'd get some from both sides.

Tuktuk Enthusiast

Tuktuk

Posted
  • Author
Posted
19 hours ago, CamGTP said:

Path of least resistance is likely the case here. You'll see this a lot on factory dual exhaust cars and SUV's too. The y-pipe section isn't exactly equal and the exhausts gases are going to go on whatever path is fastest.

 

If you revved the engine you'd get some from both sides.

So thats normal sir? Thats wierd.

Hope its not a bad thing, LOL

Harreldt New Member

Harreldt

Posted
Posted

Noticed the same on my Borla exhaust yesterday. I reved the engine and still no exhaust from 1 side. Vehicle runs fine. Shop had a look in the parking lot and couldn’t figure it out. Scheduled to put it on a lift Monday for a closer look. I’ll let you know what we find out

Tuktuk Enthusiast

Tuktuk

Posted
  • Author
Posted
On 2/26/2022 at 8:13 AM, Harreldt said:

Noticed the same on my Borla exhaust yesterday. I reved the engine and still no exhaust from 1 side. Vehicle runs fine. Shop had a look in the parking lot and couldn’t figure it out. Scheduled to put it on a lift Monday for a closer look. I’ll let you know what we find out

Thank you sir, 

Just noticed mine week ago. 
My diagnostic was saying its fine. But still couldnt get it off my head, 

Pls let me know, would really appreciate it. 

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Very few vehicles if any  have true duals these days. Like was already said path of least resistance. I’d do remember though even when I had true duals back in the day more steam out one side at times. 

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

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,962
    Total Members
    8,960
    Most Online
    contrabombarde
    Newest Member
    contrabombarde
    Joined

  • Who's Online   3 Members, 0 Anonymous, 779 Guests (See full list)

  • Latest Articles

  • Posts

    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      Thanks for all the help so far!   I did try right from 2026 right down to 2021, and only from 2023 down lets me select the option for tire psi change, but I get the vehicle not supported error!   I'll definitely try it under Chevrolet after work today, and I'll get the sensor number from gm for my truck tire sensors. And I'll let you know if it works for me under Chevrolet!   And if that doesn't work, I'm going to guess that what @Atlas said about maybe I have a different body control module could be true!  
    • Jsdirt
      2010 Avalanche 5.3 not running correctly after engine swap.

      By Jsdirt · Posted

      From where I'm sitting this sounds like a compatibility problem. I'm assuming the 2007 was a 900-series truck, and not an 800-series (they were sold side-by-side in dealerships that model year), since it starts and runs.   This is why I HATE post-2006 vehicles. Everything becomes a huge problem when you try to keep the thing running for longer than the manufacturer has designed it to.    I can't remember when Global-A architecture started - either '10 or '11. For your sake, you had better hope it's '11, or you're going to be spending some BIG money to correct this cluster-eff. That's something you need to find out before doing anything else. You may have several computers bricked ... but the fact that it runs tells me you MIGHT be ok here.     EDIT: Just did a quick refresher. You're screwed. This is Global-A. The 2 systems are NOT compatible in the slightest. Once you get the correct engine in there that IS compatible, you're going to need to see how many computers are locked. Absolute NIGHTMARE to straighten out, too. Your buddy might be better off cutting his losses and finding something else.   Welcome to post-2006 vehicle electronics. This is why I quit the industry, and drive nothing built after 1994. This stuff takes all the fun out of wrenching!  
    • bwiese
      Show Us Your 2019 & Up T1 Pictures !

      By bwiese · Posted

      Recently acquired new 2026 Silv. 1500 WT  - L3B + 4WD,  std cab + std bed, in (duh!) Sierra White. Upgrades: replaced 'steelies' w/  Vision "Flow" black alloys,  17x8.5"; HDX nerf bar w/steps (black powdercoat); Weatherguard large/deep alloy saddle toolbox; Michelin fitted bedmat (sale, perfect fit) Weathertech door sill guards TBD: rear wheebox liners 4x black fender arch trim - searching for best  (Putco: chrome only; not looking for flares either!) -Bill    
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      True, hard to say what differences there may or may not be between Chev and GM as well as a production year or mid year part change either.    I just found it odd that under the Sierra choice on the Autel that many of the last few years of production year did not include the choice of changing the tire pressure but if that is an Autel thing or a GM thing as to why the choices were not there. Knowing what tpms sensors are on the truck should give some guidance into which choices on the tool even make sense to try as I wouldn't give up just yet with the tool but I guess he will see what if anything he comes up with if he finds out a bit more info and tries a few more things on the Autel. 
    • davester
      Needing this part.

      By davester · Posted

      I'm sure if you went to a junkyard where you go in and pull the part off the truck yourself, not a used part place where they do it for you, you can get that part on it's own.  Depending on if and what else you would be buying, and time of day, they might even just skip over adding it as a item to the bill.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...