What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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wjburken

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Coming home from running errands with the wife and heard/felt a “BANG” from the front drivers corner going around a corner. Got home, 3 blocks later, and found this.

33A2EDD4-BE12-4C78-A9A7-DE1976EF65AD.jpeg
 

the_tool_man

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I got my used Esky appliques color matched and cleared this weekend. They still need to be wet sanded a bit once the paint cures. But I'm pretty happy with them considering it was a rattle can job.

I also swapped my Eagle Eyes fully-lighted CHMSL over to an OEM Esky wing I bought on eBay that was already factory painted the right color.

I decided to get rid of all the stickers on the back window, too. That, with the de-badging I did last year, cleaned it up nicely. So even though it's supposed to rain tomorrow, I washed the Denali and posed it for a photo.

20210314_170158.jpg


The Eagle Eyes wing had warped pretty badly. And I never could get the rubber sealing flap to stay put. So it's going in the trash.

20210314_143226.jpg
 

Sparksalot

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For those of you with racks on your Hoes, I have a couple of questions.

1. What is the distance between the rear edge of the rail cap and the rear of the roof? Not counting the spoiler at all.

2. Are these end caps/feet supposed to have any kind of piece or pad under them, or do they sit directly on the roof?

6204543F-B7E6-46AA-8897-756CAB534D2E.jpeg
 

iamdub

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Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.


Beat a piece of cardboard on the tip to get a pattern:

DKKO5640.JPG



Cut out the pattern, traced it on some 14 gauge sheet and cut it out:

IMG_5368.JPG



Welded, primed and sprayed with high-temp paint:

HXXW7204.JPG





It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
 

Sparksalot

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On mine, the back end of center of the pad (separate piece from the main foot) is 3 3/8” to where the body bends down for the drip channel.

View attachment 273374
I figured there was a pad under those feet. Dammit, now I have to find the part numbers on those. And order a set.

I found an exploded parts diagram of the rails to determine which side was which. There weren’t any pads shown, but I’ve seen enough of this kinda stuff to assume they should be there.
 

Robslost

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Sam Harris

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Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.


Beat a piece of cardboard on the tip to get a pattern:

View attachment 273370


Cut out the pattern, traced it on some 14 gauge sheet and cut it out:

View attachment 273372


Welded, primed and sprayed with high-temp paint:

View attachment 273371




It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
Nice work. I’ll bet it sounds hellova lot better than when that valve was falling apart!
 

Sparksalot

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89Suburban

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Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.


Beat a piece of cardboard on the tip to get a pattern:

View attachment 273370


Cut out the pattern, traced it on some 14 gauge sheet and cut it out:

View attachment 273372


Welded, primed and sprayed with high-temp paint:

View attachment 273371




It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.


Very nice welding work there brother.
 

iamdub

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Nice work. I’ll bet it sounds hellova lot better than when that valve was falling apart!

Thank you.

It's really screwing with me, to be honest. It idles and lopes like it did before, but now that it's so quiet, it's like a stock vehicle with a misfire. The flapper fell out a month or so ago so it was always either 50/50 muffled and unmuffled (loud) or, with the cutout open, muffled side closed off and unmuffled side 100% open (loudER).

I'm just glad to be able to cruise and converse with the fam again. I'll probably have to design and make my own cutout to have what I want. I have many, much larger priorities at the moment.
 
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Routing wiring for my dashcam and radar detector a while back and found a foot pressure switch under the floor pad.
View attachment 273375
Did some searching and found out it was this...
https://www.tremcoemergencyproducts.com/anti-theft-system/
Shift lock pressure switch.
Our vehicles already have this ability, called "Immobilizer" and just needs a switch providing 12v to the tan/white wire from the BCM to the shift lock solenoid.
b65f3e8cfdd90e5f93f68fbf7e45185d.jpg


Sent from my SM-G930V using Tapatalk
 

Sam Harris

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Our vehicles already have this ability, called "Immobilizer" and just needs a switch providing 12v to the tan/white wire from the BCM to the shift lock solenoid.
b65f3e8cfdd90e5f93f68fbf7e45185d.jpg


Sent from my SM-G930V using Tapatalk
Yes, I suppose all you really need is a button to activate / deactivate it... [emoji3166]
 

Rocket Man

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Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.


Beat a piece of cardboard on the tip to get a pattern:

View attachment 273370


Cut out the pattern, traced it on some 14 gauge sheet and cut it out:

View attachment 273372


Welded, primed and sprayed with high-temp paint:

View attachment 273371




It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
No more cutout then? NVM, caught up in the thread.
 

Rocket Man

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Thank you.

It's really screwing with me, to be honest. It idles and lopes like it did before, but now that it's so quiet, it's like a stock vehicle with a misfire. The flapper fell out a month or so ago so it was always either 50/50 muffled and unmuffled (loud) or, with the cutout open, muffled side closed off and unmuffled side 100% open (loudER).

I'm just glad to be able to cruise and converse with the fam again. I'll probably have to design and make my own cutout to have what I want. I have many, much larger priorities at the moment.
Reminds me of my Silverado with it’s too quiet exhaust and the cam makes it lope hard. It just doesn’t seem right. Damn truck rocks a bit from the lope but it sounds weird.
 

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