Performance Exhaust GM part Number

Interesting… I contacted Borla about GM part 19433760 and they said it was more like touring.

Which system did you end up going with? I wish there were more installs/videos of the GMPP system.

nuclearxp said:

Which system did you end up going with? I wish there were more installs/videos of the GMPP system.

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Not sure if you were asking me or someone else… but I went with the GM performance exhaust ultimately (84460754) but briefly had the Borla exhaust (19433760). The Borla system was too aggressive for me and the fam. I still have the Borla exhaust if you’re interested.

Yep you. How do you like the GM system? Do you have a video of it?

I have the long wheelbase version on the way, just curious what it sounds like. It’s hard to find people with the actual GMPP version - everyone on the internet just calls it the “GM borla system” which is the other flavor they sell on the accessories site (without the resonators).

Thank you on the Borla offer, but I have an XL and also have yearly 2,500+ mi road trips with the family so I can’t drive them nuts either. I just want to hear it when I step on it. The GM oem system is inaudible all but after startup…

nuclearxp said:

Yep you. How do you like the GM system? Do you have a video of it?

I have the long wheelbase version on the way, just curious what it sounds like. It’s hard to find people with the actual GMPP version - everyone on the internet just calls it the “GM borla system” which is the other flavor they sell on the accessories site (without the resonators).

Thank you on the Borla offer, but I have an XL and also have yearly 2,500+ mi road trips with the family so I can’t drive them nuts either. I just want to hear it when I step on it. The GM oem system is inaudible all but after startup…

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I like the GM system a lot. The only time my wife hassles me is on cold starts when the kids are asleep. As others have said. It is louder on cold starts and then quiets down pretty quickly. It sounds better than stock and I think the exhaust tips look good too.

I do have a few very short videos on my phone, but I’m not sure how to upload them. It only offers to let me attach photos.

I found this video to be helpful. Although not exactly exactly our system.

BrotriX said:

I like the GM system a lot. The only time my wife hassles me is on cold starts when the kids are asleep. As others have said. It is louder on cold starts and then quiets down pretty quickly. It sounds better than stock and I think the exhaust tips look good too.

I do have a few very short videos on my phone, but I’m not sure how to upload them. It only offers to let me attach photos.

I found this video to be helpful. Although not exactly exactly our system.

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Thank you sir. Just closing the loop in case anyone else stumbles onto this thread since I installed mine.

That video is pretty accurate - the truck and SUV have slightly different exhausts stock/GMPP on the 6.2 but that video is the most accurate as to the GMPP system sound on the SUVs.

It's definitely tame even on cold startup especially compared to any aftermarket. Very deep and throaty - not as loud or in your face as the Corsa systems. No drone at any speed I've found yet. When you stand on the gas like in the videos it wakes up and sounds good. It's much deeper than it is loud so anyone going for a more family friendly will like it. The only behavioral change is with the stock exhaust when you roll on the throttle or even stand on it over 55 you can't hear anything but with this system rolling lightly on the gas over 55 you get a nice deep note. I think the revised resonators doing their thing there to let some character through. I haven't gone up any long uphill mountain grades (but will soon) to know if it'll get old uphill but I suspect it will be fine. For me drone is an obnoxious resonance at a certain speed/throttle combination that reverberates where this is just a "hey I'm here if you give it some gas" sound.

New to the forum... just bought my 2024 Yukon Denali. My wife has a 2023 Sierra Denali with a Borla Cat back (Touring). I just installed the Borla Cat back (S-Type) on my Yukon. The S-Type is more aggressive than the Touring during a cold start and WOT/heavy footed acceleration, but honestly not a wild difference. The difference between stock and any Borla is much greater.

So I can keep my warranty; How many labor hours should I be looking at for a GMC Dealer to replace my factory exhaust with their performance Borla exhaust for an XL?

iamlegion said:

Yep you. How do you like the GM system? Do you have a video of it?

I have the long wheelbase version on the way, just curious what it sounds like. It’s hard to find people with the actual GMPP version - everyone on the internet just calls it the “GM borla system” which is the other flavor they sell on the accessories site (without the resonators).

Thank you on the Borla offer, but I have an XL and also have yearly 2,500+ mi road trips with the family so I can’t drive them nuts either. I just want to hear it when I step on it. The GM oem system is inaudible all but after startup…

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I bought GM performance exhaust from ShopChevyParts.com

I have short wheel base. Got the black exhaust tip variant. Came with a free hat. It was a GM authentic parts labeled borla box.

2021 Yukon | Performance Cat-back Exhaust System | 6.2L | Dual Rear | Quad Black Chrome Tips

Love it. Coming from corsa and kooks long tubes which was too much for me and I’m now selling. Went kooks shorty, factory cats, gm performance. Absolutely perfect for me, the girly, and the kids

BrotriX said:

Not sure if you were asking me or someone else… but I went with the GM performance exhaust ultimately (84460754) but briefly had the Borla exhaust (19433760). The Borla system was too aggressive for me and the fam. I still have the Borla exhaust if you’re interested.

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I was looking at these options but the GM performance exhaust for my 2024 6.2l Tahoe is #84888291(different number than the one you got), the Borla is the same #19433760. The price difference is almost $1k cheaper for the Borla and the GM #84888291 describes increased 13HP and torque. The Chevy Parts website offers the option for dealer installation for $200 which sounds pretty cheap for dealer work.

Did you say that the GM performance was quieter than the Borla? Did you pay almost $1k more for the GM performance you went with?
Hopefully you can answer my questions as I originally wanted to get a system right from Borla. Borla is slightly cheaper than the Chevy Parts online but they are running coupon for 15% off and I have rewards points to apply so it is pretty close