What did you do to your NBS GMT800 Tahoe/Yukon Today?

[eand28]

Could also be the heat shields on the cats.

 

[05Single]

Could also be the heat shields on the cats.

I was told that's what mine was. Common issue?

 

[PG01]

Maybe you guys can help me out here. I'm getting a strange metallic twangy sound coming from my exhaust on start up and initial movement. It happens a free times then goes away. It's super annoying almost sounds like the exhaust is hitting something but I never touched my exhaust.

I'll try to get a video tomorrow but it's hard to capture

Just a thought, maybe its the flexplate, starter area making you think/feel like its exhaust?

 

[Tonyrodz]

Could also be the heat shields on the cats.

I was told that's what mine was. Common issue?

That's one issue I don't have

 

[brian.roberts.1293]

So I had a straight through thrush muffler it was rediculously loud. So I bought this flowmaster 50 and had it welded on in is place. Funny story as the guy is taking off the old muffler he says I see why it might have been so loud in the cabin. The person who issued it put it on backwards. The V's were having towards the cabin. Is nice and quiet in the cabin now though so I am happy. And my twins can hear me without shouting. Lol

2004 Z71 Suburban Green I have a few upgrades done.

 

[Tonyrodz]

So I had a straight through thrush muffler it was rediculously loud. So I bought this flowmaster 50 and had it welded on in is place. Funny story as the guy is taking off the old muffler he says I see why it might have been so loud in the cabin. The person who issued it put it on backwards. The V's were having towards the cabin. Is nice and quiet in the cabin now though so I am happy. And my twins can hear me without shouting. Lol

2004 Z71 Suburban Green I have a few upgrades done.

I guess that's why mufflers are usually marked inlet/outlet. Reading is fundamental!

 

[Bombsquad85]

I have the same noise . Usually happens at low rpms. 1500

Yes!

 

[Bombsquad85]

Just a thought, maybe its the flexplate, starter area making you think/feel like its exhaust?

I hope not that doesnt sound fun at all

 

[Sam Harris]

Link ?

This is not what I received, so not sure why you want the link, but here you go: Airaid 201-712 Direct Replacement... https://www.amazon.com/dp/B004IARFGA?ref=ppx_pop_mob_ap_share

 

[Tonyrodz]

I hope not that doesnt sound fun at all

It's not. My van is doing that now. Like metal tinging sound. Sounds like exhaust noise but is coming from the flywheel cover area.