C Gerber

For pete's sake, I total forgot I still have this. My wife cleaned up the garage and the box that this muffler delete is in ended up on top of one of the cabinets. I still have this up for sale, wow! Hopefully someone is interested somewhere!

This is still available, it would be great to meet up with someone in the Fort Wayne area, I can deliver it.

I wanted compartmented storage in the truck bed, and ended up picking up 3 of these foldable hard milk crates and used those telescoping ratchet cargo bars. Works very well and when I don't want it there, those 3 crates fold right up and fit under the rear seats along with the bar. Not sure if others have such a need but I thought I would provide my solution for this. https://www.amazon.com/Shippers-Supplies-Steel-Cargo-Pickup/dp/B0731L3869/ref=sr_1_17?dchild=1&keywords=ratcheting+cargo+bar&qid=1607910889&s=automotive&sr=1-17 https://www.amazon.com/gp/product/B01969ABOK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 and short bungie cords to hold the crates to the bars. Thank you for looking!

A friend of ours works at the Fort Wayne plant, and I heard him mention that they had engineers there at the plant for several months trying to figure out the issue and how to fix it. I didn't ask him whether they ever think they found a fix, but based on this thread, I have to assume they never did. I will have to keep an eye on our 2020 Denali and I wish I had known about this before our purchase.

I open to shipping this within the US, asking $16 for shipping.

I bought this based on numerous reviews and videos, wanting a louder exhaust, but after we put it on, the kids in the backseats of our crew cab didn't like it at all and it disrupts their music/video at cruising speeds on the highway. So we went back same day and had the stock system put back on, and now this is for sale. I will be looking at a borla muffler in the future, but this cheap and easy mod sounded pretty mean and pretty darn good while I had it on the truck for a few hours! If you are local to the Fort Wayne IN area, I am asking $85 picked up (or we meet somewhere on the Dupont corridor). If I have to ship this, then I have to know the zip code and I can see if it is worthwhile to ship it or not.

Our Sierra, with just 9K miles, has the Auto Stop no longer working. We don't know why, but I don't miss it! My wife asked if we should take it in, and I said, let's wait!

We recently added the Rotofab to our 2020 Denali. It took about an hour, a good 20 minutes was spent messing with that intake tube inside the front grill, before I realized I just have to move it out of the way to the point I could still install the foam seal on the end of it and have room to drop in the RF air box. Videos show people taking it out of the truck, mine wasn't coming out no matter what I did. There is better throttle response, and I feel a bit more gas mileage perhaps. A much CLEANER engine compartment though!

New to the forum, we just picked up a Denali 5.3L 2020 and I have been going mod-happy. I wanted a meaner exhaust sound too, and just tried the AFE muffler delete pipe. We tried the truck for a day and went back and put back on the stock muffler/flapper until I can find an aftermarket muffler to put in place of the stock. The drone on the crew cab was quite intense around 1500 and under a load, even my wife that is hard of hearing didn't like it. Kids in the back definitely didn't. Sounds great from the outside though, a bit like my camaro SS with the pops on deceleration, etc. So now I want to find something that is about 1/2 between the two and without inside drone.... Got the Rotofab CAI installed, hard tonneau cover, gm rubber mats all around, and much improved underseat tray. It's a shame that GM thinks that tray is even worth mentioning, it hold very little and is so flimsy. So my hunt for a more aggressive exhaust tone continues! ) as I don't want to toss them in the trash. I plan on finding someone local that might want my stock parts (intake/airbox, underseat tray) and afe muffler delete so they don't take up room in the garage, but will be watching this thread to see whether there are more suggestions for exhaust. The Borla ProXS sounds like it should be at the top of my list right now.