J2Jones

Neat idea. I'm assuming you 3D printed them. What type of material did you print them in? Are you willing to share the STL's?

I have the Borla S-Type and love it! I get many compliments and have people ask me about it all the time. No drone on the highway and isn't really noticeable unless you are "on-it" or listening for it. No regrets.

Just to let you know, I used Armor Shield and got about 4 years out of it before I reapplied and it was still beading well and looking very glossy. Always get comments that my truck looks "brand new". Saw the same on both vehicles. I will say, my cars are always garaged so that would obviously help.

I'll be interested hear if you notice any changes in how your auto start/stop behaves.

Interesting. When I installed my AMP steps only needed the OBD port and power from the battery. I'll be interested to hear if you notice any other effects. I believe, since installing mine with the OBD plugged in, my start/stop function has been disabled. Haven't unplugged them to check though.

It looks like Zaino is still around. Just haven't used them since moving away from black vehicles. It was an unbelievable finish, like a mirror, the depth was amazing, but a lot of effort and didn't seem to last as long as ceramics. https://www.zainostore.com/

I've debated asking about this. I live in North Carolina so fairly mild weather but I definitely notice lower MPG on cold days. It seems to be much more pronounced in this truck than other vehicles I've owned. I see 1.5-2.0 MPG less anytime the temps get into the low 40's F or below.

I can't speak to any of the ones in their list but when I researched back in 2019 when I got my Truck, I found Armor Shield and applied two coats and have been very happy. Recoated for the first time last summer so got about 4 years out of it and get comments all the time on how my truck looks brand new. Prior I had black cars and used Zaino products and their 5-6 step process. This was much less effort. https://avalonking.com/products/armor-shield-ix-diy-kit

Just a wild guess, any of you folks having this issue have Alexa or Google voice features enabled on your vehicles? If so, I'd assume the mike is listening all the time. Might be a side effect?

I'm running 35x11.50 Ridge Grapplers. I run them at 37 psi as I've noted that with sustained highway driving, they really heat up and generally end up around 40-41 PSI.

Turn signals in the 2019 are a separate array of LED's. The DRL's were three LED's, all white from the factory, and a "light tube" with a diffuser. I guess in theory, if you argue that White is all colors at full intensity, a white LED should be able to be made Amber by changing color intensity but I'm not an electrical engineer so I don't really know. It's definitely not easily reversable or inexpensive as I would probably just have to buy replacement headlight assemblies. As I said, I don't think I'd do it again.

Please do tell, this has got to be interesting.

Maybe easier to do in a 2022. In my 2019 AT4, with the LED modules, I used the following to be able to change mine to amber (actually can select many colors). They work fine, although I wish they were a tad brighter in daylight, but a pain to install. Have to "bake" open the headlight units and replace the factory white leds to install. Not a simple process. Will be interested to see what methods you find. https://www.oraclelights.com/products/2019-2020-gmc-sierra-oracle-colorshift-rgb-w-headlight-drl-upgrade?rq=mk_gmc~md_sierra~yr_2019&variant=31764823146593

I have a 2019 AT4 with 20" wheels running 35x11.50 Ridge Grapplers without any other suspension mods. Had to tie the fender liner on the driver side front back a little with a zip tie because there was some very slight rubbing at full lock. No other changes needed.

Thanks for the suggestion, hadn't thought of that and will certainly do that if the light comes back on. I have a code scanner on the way and an appointment with the dealer on Monday.

I have a 2019 GMC Sierra 1500 with 6.2L. About 42,000 miles. Stopped at the pharmacy the other day and when restarting the truck, it threw an Orange, constant on CEL. The truck drove normally but the light stayed on through multiple starts/stop through the day. Took it to Advanced Auto Parts and their scanner gave the generic codes above. I started the vehicle to back it out of the garage yesterday and CEL was still lit. Went out late in the day and restarted to pull in to the garage and the CEL was gone. I've only driven 5-10 miles since it originally came on. Any ideas? Has anyone else seen this? TIA for any help. Also, the myGMC app reflected warnings on the following but they are all gone now too... Engine and Transmission System ABS Stabilitrak Stability Control Airbag System

I had intermittent electrical issues with a 2006 Mustang GT that I had into the dealer at least 5 times under warranty and they couldn't find it, the 6th time, less that 1,000 miles outside of warranty they located the issue and wanted to fix it but Dearborn wouldn't let them. That coupled with my son's experience with repeated failures on a transmission and Ford won't be in my house either. That said, had a GMC Envoy XL with multiple fuel tank leaks (all fixed under warranty) and then with another fuel tank leak, coupled with a random electrical issue, all within 18 months ownership. Said I'd never have another GM either. And now I have a 2019 AT4. Just liked the redesign enough to risk it I guess.

Same for me.

I have a 2019 with 6.2L and 10-speed with a Borla S-Type. There is no drone and no helicopter sound on the highway. I have DFM active while you may be able to hear the change slightly, I think you'd really have to listen for it. IMO, with this combination, the "need" for DFM deactivation is oversold.

Thanks for the reply. I've tightened everything a few times now. Solves it for a while but tends to come back. Maybe will try new/different clamps. Love the exhaust as a whole, just kind of embarrassed by the rattles.

Agree. I have the S-Type as well and it has no drone. Only issue I have is I keep getting rattles. Always seems like it's the last clamps coming loose closest to the exhaust exit. Anyone else find this? Any suggestions beyond getting it welded? I don't hear it on the road, generally when going slow up a grade or pulling through a drive-through.

I had the same happen on my BakFlip cover. Just went to Lowes and bought the following. Seems to be working fine. Had only been 4-5 months so we'll see how long it last. Isn't expensive either way. https://www.lowes.com/pd/M-D-10-ft-x-1-2-in-Black-Window-Seal-Rubber-Window-Weatherstrip/1082125

Like your graphics. Nice work!

35x11.50R20 Nitto Ridge Grapplers.

Drove the 5.3 and 6.2 back to back and to me, wasn't a choice, had to get the 6.2. Just all around smoother and more powerful. Not sure what transmission the 5.3 had so that could have accounted for some of the difference. The 5.3, at least on that truck, felt "sluggish" to me.