Performance Exhaust GM part Number

[GBKris]

Does anyone know the difference between the two GM part numbers 19433760 and 84460754? I have a 2022 Yukon Denali and looking to upgrade my exhaust system. Both show up when I enter my VIN.

 

[WICKEDOWESIX]

Does anyone know the difference between the two GM part numbers 19433760 and 84460754? I have a 2022 Yukon Denali and looking to upgrade my exhaust system. Both show up when I enter my VIN.

19433760 has a front resonator just before the muffler and is branded as Borla

84460754 is GMPP (made by Borla) and has the resonators at the rear near the tail pipes

 

[BonesDT]

19433760 has a front resonator just before the muffler and is branded as Borla

84460754 is GMPP (made by Borla) and has the resonators at the rear near the tail pipes

Thanks. I too am faced with this decision.

So what is the real world difference between these 2 configurations?

Also, how do both these part numbers sold through GMC, differ from the aftermarket systems sold directly from Borla?

I’ve already contacted Borla and asked them these questions and their response was simply:
“84460754 is not made by Borla.”

 

[Blackcar]

If your putting on new vehicle that is under warranty I would ask them Dealer and make sure if they install warranty on vehicle will stay intact.
If not under warranty aftermarket might be a good alternative.

 

[H1Chester]

If your putting on new vehicle that is under warranty I would ask them Dealer and make sure if they install warranty on vehicle will stay intact.
If not under warranty aftermarket might be a good alternative.

Legally they can not void your warranty for a cat back. However, if you go long tube headers and tune your PCM then yes your warranty will likely be voided. I HATE this myth that is all over forums. See Magnuson Moss Warranty Act.

 

[Blackcar]

If they can prove that whatever was added to vehicle is causing the active problem with vehicle under warranty, they will use it to be denied repair.
Sure, you can fight it with Magnuson Moss Warranty Act. but you're going probably have to get attorney.

 

[H1Chester]

I’m just saying that I’ve NEVER had an issue with a warranty not being honored. Even with full bolt ons.

 

[BonesDT]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

 

[Scrappydoo1956]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

I have the Borla 140557 Touring on a 2019 Tahoe. Currently the Touring is the only available option from Borla for 2015 thru 2020. This has welded on chrome tips. No visible resonators. It does drone between 1700 and 2000 RPM. I have talked to Borla about the drone and they are waiting for me to send them a recording of said drone. They said it could be defective. They also told me that the system is designed with the resonator built into the muffler and that is how they achieve zero drone. I'm not sure if this is BS or not. I will send them the recording and see what they say.

 

[BrotriX]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

I think the 2 GM systems are backwards with regard to the resonators and name etching.

On the topic of resonators… what are the differences in the driving experience of resonators before the muffler vs after? Intuitively, it would seem that the resonator should go before the muffler. But even the stock system has them after.

 

[BrotriX]

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

 

[iamlegion]

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

 

[BrotriX]

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

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.

 

[iamlegion]

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…

 

[BrotriX]

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…

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.

 

[iamlegion]

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.

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.

 

[mkcotton]

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.

 

[ranger0787]

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?

 

[jmart157]

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…

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

 

[BacDoc]

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.

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