Jump to content

Stock exhaust system components

Adambraaaps

By Adambraaaps
in Engines & Drivetrain

Recommended Posts

Adambraaaps New Member

Adambraaaps

Posted
Posted

So on my 18’ Silverado I can see there are 2 parts, one looks like a big muffler and the other smaller one after the muffler a resonator. Am I correct? 

SirenRed16 Senior Enthusiast

SirenRed16

Posted
Posted

Yeah you're correct. There is also a flapper valve right behind the muffler.

Sent from my SM-G955U using Tapatalk

TRKLGND Enthusiast

TRKLGND

Posted
Posted
On 1/9/2019 at 11:29 AM, 3tspapat said:

FYI. On 2018 the flapper is before the muffler.

Not on my 2018 DC 6.2L.  It is most certainly after the muffler.

ftwhite Enthusiast

ftwhite

Posted
Posted

Same here. On my 2018 6.2 1500 CC, It goes cats, y-pipe, cat, flex joint, muffler, flapper, resonator, tail pipe.
The flapper might even be considered part of the OEM muffler part.

Sent from my SM-G960U using Tapatalk

Jaychevy81 Enthusiast

Jaychevy81

Posted
Posted

I have the 5.3 stock had the flapper before the muffler.


Sent from my iPhone using Tapatalk

3tspapat Enthusiast

3tspapat

Posted
Posted

Wait!!! I also have a flapper in the passenger seat but only on the weekends and only when my wife is in the car :D

ftwhite Enthusiast

ftwhite

Posted
Posted
For the 6.2s I guess. I have a 5.3. I think OP has a 5.3 as well.
I think the only thing that matters is the cab type and bed length. 5.3and6.2 are same part number. As far as I can tell from pictures, if your flapper comes before muffler, you have a after market job. Machanically, I am not sure why that would work anyway. Reducing flow or pressure to the muffler would be odd... But maybe.

https://www.gmpartsonline.net/oem-parts/gm-f-muffler-84327965/?c=Zz1leGhhdXN0LXN5c3RlbSZzPWV4aGF1c3QtY29tcG9uZW50cyZpPUdIMTQyNDA1JnI9bGF5ZXJfNCZhPWNoZXZyb2xldCZvPXNpbHZlcmFkby0xNTAwJnk9MjAxNyZ0PWx0eiZlPTUtM2wtdjgtZ2Fz

Sent from my SM-G960U using Tapatalk

TRKLGND Enthusiast

TRKLGND

Posted
Posted
On 1/11/2019 at 5:06 PM, 3tspapat said:

For the 6.2s I guess. I have a 5.3. I think OP has a 5.3 as well.

Yes, the OP has the 5.3 or the V6.  His signature says he has an LT so he can't have the 6.2L.

3tspapat Enthusiast

3tspapat

Posted
Posted

hey let's stir the pot some more! I was checking out a 2017 Sierra...the flapper was AFTER the muffler! I think they just put it wherever they want it. Pretty soon it will be before the third cat. Heck maybe after the MAF in the air intake.

ftwhite Enthusiast

ftwhite

Posted
Posted

I bet the ones before the muffler are for back pressure, and the ones after are for sound. Just a guess though. It seems they changed the design of the exhausts in 2017. 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • BlueV8
      AFM Disabler Question

      By BlueV8 · Posted

      A complete delete is the most thorough mechanical solution, but it is also major engine work. On a quiet truck that is still under extended warranty, opening the engine purely as prevention is difficult to justify. A plug-in disabler stops commanded cylinder deactivation, but it does not remove or repair the collapsible lifters, so it should not be treated as failure insurance. I would keep the oil full, document the maintenance, and have any persistent tick, misfire, or loss of power diagnosed promptly. If the engine eventually has to come apart, that is the logical time to compare an OEM-style repair with a complete delete. The right choice depends on the truck’s symptoms, warranty status, expected ownership period, and whether the engine already needs to be opened. We explain that decision in more detail here—full disclosure, this is our own guide: https://www.bluev8.com/blogs/news/do-you-actually-need-an-afm-disabler   One exception: some 2021 L82/L84 trucks have RPO YK9, meaning cylinder deactivation was already disabled in the factory ECM; on those trucks a plug-in disabler is redundant, although the AFM/DFM hardware remains inside the engine.
    • mark249
      Help purchasing a touch screen digitizer

      By mark249 · Posted

      Brought my 2015 Colorado into the dealership to check my touch screen issues, had that ghost touch thing happening. They said I needed a new touch screen and they could either order me one for $500. The lady at the service deck was nice enough to tell me I could order a touch screen online for less, she did stipulate that the touch screen had to be factory OEM, you can't pair an aftermarket screen to my radio seeing it was 2015, it had to be a GM factory OEM only. I found a few on Amazon and Ebay by the numbers on the back of the old screen, DJ080PA-01A GM# 22740886, Some said "OEM" in the description and others just said "Replacement". Would a replacement be the same as a OEM as long as it had the same numbers on the back of the screen? In some of the descriptions they also show different brand names but same numbers, is that an issue?  
    • Donstar
      Navigating senior years.

      By Donstar · Posted

      I have both but typically use the 4 legged walker (wheels on front, ski's on back).   The four wheeler is starting to be used on "longer" outdoor walks.  The 4 legged walker is particularly helpful in practicing good walking posture.  Both of my knees are at different stages of recovery and I'm trying to not develop poor habits.  I can actually manage with a cane but it's very difficult not to favor one leg over the other.  My PT recommends I continue with my 4 legged walker for a while.  Yesterday was four weeks since my last knee replacement and I'm excited about my progress to date.  It has been a hell of a rough journey so far but it is exciting to witness  systematic and continuous improvement.  I went for years watching the decline of my "mobility".  It seems that everyday now I am alerting my wife to something I can do now that I couldn't a day or two ago!  I encourage anyone facing the prospect of knee replacement to share any concerns with others who have had the surgery.  It isn't an instant fix but rather is a considerable amount of short term pain for long term gain.  Recovery time and pain levels vary for individuals post surgery but the end results are typically very positive and I've never encountered anyone regretting having had the surgery. 
    • diyer2
      AFM Disabler Question

      By diyer2 · Posted

      The lifter issue can be dealt with by shorter oil changes and quality oil IMO.
    • diyer2
      Winter Returned

      By diyer2 · Posted

      Got heavy rain, hail and light rain yesterday. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...