What did you do to your 21+ T1XX today?

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nick14226

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Looks OEM and he modified it to add a square.
Might do similar with acrylic or 3D printed and VHB double sided tape to attach.
I’d be very interested to see what you come up with. The hitch cover has a bit of a curve to it, so I’d imagine you can make an even cleaner fit 3d printing it versus the flat trim piece I found.
 

Fast_AT4

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I’d be very interested to see what you come up with. The hitch cover has a bit of a curve to it, so I’d imagine you can make an even cleaner fit 3d printing it versus the flat trim piece I found.

Yeah, might have to do this as I like the hitch receiver/cover that I designed but that look of no cover...looks like crap. Also gives me an excuse to design a new hitch cover for me lol. Should also make a section for the trailer hookup so no need to ever remove it moving forward.
 

shekmark

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Yeah, might have to do this as I like the hitch receiver/cover that I designed but that look of no cover...looks like crap. Also gives me an excuse to design a new hitch cover for me lol. Should also make a section for the trailer hookup so no need to ever remove it moving forward.
Yes, then sell them to us!
 

Saltydog

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Well I ordered replacement wheel #2.......
Yukon wheel.jpg
 

MBTahoe

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4hrs later....Corsa installed. Wish they would make the pipes slip in a bit easier....but straight forward install. Videos to follow.
How do you like the sound? Is it too loud? Does it drone too much?
 

Fast_AT4

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How do you like the sound? Is it too loud? Does it drone too much?
Love the sounds. Can barely hear it when cruising so no drone. When you get on it is when you really hear it. That COLD START is NICE. Went out to dinner last night and as always, backed it in. Then I noticed that there were outside seating not 5 feet from my Yukon. So after dinner, I informed the customers sitting there that it might get a bit loud for a few moments. It was not fully a "cold start" so it wasnt as loud as in the morning..but all gave the thumbs up at the table.
 

nick14226

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Love the sounds. Can barely hear it when cruising so no drone. When you get on it is when you really hear it. That COLD START is NICE. Went out to dinner last night and as always, backed it in. Then I noticed that there were outside seating not 5 feet from my Yukon. So after dinner, I informed the customers sitting there that it might get a bit loud for a few moments. It was not fully a "cold start" so it wasnt as loud as in the morning..but all gave the thumbs up at the table.
DFM bothering you at all when it kicks in? Corsa on my previous Yukon sounded terrible when AFM dropped cylinders. Thankfully tuned it out of that one.
 

Fast_AT4

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DFM bothering you at all when it kicks in? Corsa on my previous Yukon sounded terrible when AFM dropped cylinders. Thankfully tuned it out of that one.
First GMC/Yukon so not even 100% certain if/when DFM is kicked in. Since we cant tune it out due to GM fu**ery, is there an option for disable it via a module?
 

nick14226

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I bought the '17 Yukon (5.3 6 speed) used and noticed AFM right away. Cruising along, especially at lower speeds, a little throttle tip in and feels and sounds like it's lugging. Blackbear tune and I was thrilled, tuned off the AFM, fixed the weirdness with the trans shift points, night and day difference in drivability. Corsa sounded good at all times instead of the helicopter sound during lugging. Very little to no drone from that exhaust though, regardless, which was impressive.

I was optimistic with the '22 Tahoe (5.3 10 speed) DFM. Didn't notice it at all first 7,000 miles or so. Now, same thing as AFM, lugging. The miles, the time, the first oil change, the colder weather, a stack up of all these variables but now it's here on my Tahoe and very noticeable. Blackbear seems to be a no-go, checked in with them earlier this week. Range isn't saying no, but if blackbear can't is it realistic they can? I tried 89 octane and noticed a slight improvement, running a first tank of 93 now for the heck of it incase the cylinders that are firing when DFM kicks in will misfire less with the higher octane (grasping at straws). Could cause the opposite problem and have DFM kick in even more with the higher octane though. We'll see if that helps. Also have a bottle of the ACDelco injector cleaner coming, the one recommended in the manual. Can't imagine I have buildup already, gas I run isn't top tier but it's a newer and very busy gas station.

Last resort is running in L9 as it stops DFM (and auto stop/start which is nice), just don't love losing a gear as a "solution" and I'm not sure I like what the transmission is doing in L9. We'll see, that might be what I end up sticking with if the 93 octane doesn't do the trick.
 

Fast_AT4

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I bought the '17 Yukon (5.3 6 speed) used and noticed AFM right away. Cruising along, especially at lower speeds, a little throttle tip in and feels and sounds like it's lugging. Blackbear tune and I was thrilled, tuned off the AFM, fixed the weirdness with the trans shift points, night and day difference in drivability. Corsa sounded good at all times instead of the helicopter sound during lugging. Very little to no drone from that exhaust though, regardless, which was impressive.

I was optimistic with the '22 Tahoe (5.3 10 speed) DFM. Didn't notice it at all first 7,000 miles or so. Now, same thing as AFM, lugging. The miles, the time, the first oil change, the colder weather, a stack up of all these variables but now it's here on my Tahoe and very noticeable. Blackbear seems to be a no-go, checked in with them earlier this week. Range isn't saying no, but if blackbear can't is it realistic they can? I tried 89 octane and noticed a slight improvement, running a first tank of 93 now for the heck of it incase the cylinders that are firing when DFM kicks in will misfire less with the higher octane (grasping at straws). Could cause the opposite problem and have DFM kick in even more with the higher octane though. We'll see if that helps. Also have a bottle of the ACDelco injector cleaner coming, the one recommended in the manual. Can't imagine I have buildup already, gas I run isn't top tier but it's a newer and very busy gas station.

Last resort is running in L9 as it stops DFM (and auto stop/start which is nice), just don't love losing a gear as a "solution" and I'm not sure I like what the transmission is doing in L9. We'll see, that might be what I end up sticking with if the 93 octane doesn't do the trick.

My process:

Always use highest octane (92 or 93) Shell or Mobile
Start Yukon
Already have auto on/off disabled with module added
Let cold start end
Wait about 5 minutes of driving
Change to Sport Mode
Change to L9

So maybe with my above process im good.

On the fence between the pedal commander or a Corsa CAI for my next item.
 

Saltydog

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I would get wider tires that protect those wheels ! Bridgstones don't look very beefyMy Goodyear trailbosses have more sidewall. Is that just from parking?
I really wanted the AT4 because the of wheel/tire package, but the wife said it looked to manly....

Both times it has been on street curbs, to be fair at the last incident, the curb is very high and its a tight right-hand turn.
 

JerseySUP

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I find having a d-ring on the back of my vehicles comes in handy and didn’t love the look without the hitch cover on the Tahoe. Started messing around with options and came up with this. Pretty happy with how it turned out. Maybe someday there will be an oem in-use option that will expose the trailer electrical connection and chain connection points that looks clean, but until then this should work for the d-ring at least.View attachment 388334View attachment 388335
What material did you use to line the opening once you cut out the rectangle? I was considering making a similar cut on my cover, and I really like how you finished yours.
 

nick14226

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What material did you use to line the opening once you cut out the rectangle? I was considering making a similar cut on my cover, and I really like how you finished yours.
Thanks! I cut it first without and trashed my first hitch cover, as careful as I was with the Dremel it just wasn’t clean enough looking. Tracked this down in black and ordered another hitch cover.
FD07DA31-A1B7-4D14-9B6C-9FD4CE23D957.png
 

CASTLEDFW15

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Took advantage of the low workload at Discount Tire……Swapped the tires and TPMS over to the new Gloss Black MultiSpoke wheels for my 23 Premier….with red center caps.
 

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