SierraStorm21

All of them for anyone willing to find it on their product page....or do even a basic Google search

Gotta go to the right oil page. You're referencing the wrong stuff https://www.mobil.com/en/lubricants/for-personal-vehicles/our-products/products/mobil-1-supercar-0w-40 Click on Product Data Sheets (PDS) Snip from that

Actually Walmart has it even cheaper and you're able to get the case plus singles there. Regarding Amsoil, it does meet Dexos R according to their website. So I'm not sure where you got that. There's quite a few guys that use it on the Camaro and Vette forums as well so I have zero hesitation in using it in my truck.

I keep this in my Amazon cart, but it was too high priced a few months back when I changed the oil in my truck and the Camaro ZL1, so I ended up getting the Amsoil Signature series gallon jugs for less. They offer a standard version for about 30% less for those wanting to save some $.

Yeah after hearing the email story that DonsLife read on his channel last week where the owner was having performance issues and no one could track it down, then coming in for the test, it passes, but then the tech heard something that didn't sound right. Dug a little further and found it was on the verge of imploding, and is getting a new engine, didn't inspire any confidence about the test and it's validity

If this is indeed true, I wonder why you have dealers pestering folks about bringing in their truck for the recall. One of my local dealers reaches out via phone, email and text every few weeks trying to get me to come in. Yet the status according to the NHSTA for mine is Recall Incomplete, remedy not yet available I'm sort of waiting on the sidelines for now to see how this unfolds

I have not yet received my letter in the mail and am the original purchaser, so I'd expect that to be arriving soon. However has anyone had their local dealership cold call them to schedule a service appointment regarding the recall? Just received such a call about an hour ago, but wasn't able to answer so they left a detailed VM and extension to call back.

Yeah that's the way to go. I did, stock was 347.3 WHP / 388 /WTQ and after both the Whipple, Alky Control and custom tune, I was at 554 WHP / 504 WTQ. Using an online calculator, it estimates I'm at 670 HP / 610 TQ at the crank. Who are you going with to do it?

I did, but I'm not sure I'd do it again for a few reasons. I have to keep the Windshield Wiper fluid reservoir 2/3 or more full in order to not have a cavitation problem with the system when driving. So I fill it up every time I go to drive it. That's apparently due to the angle and design of the factory reservoir where the feed comes out and EPC offered to make a custom reservoir, but I decided against it. I even had a leak a few weeks after it was done and had to drive it back up there to have it resolved. The problem was that the fittings Alky sends aren't a perfect fit for a truck setup. So they came up with their own custom fittings solution and it's been rock solid since. Secondly it's not something that is going to be maintenance free. It's kind of complex setup with a pump in the fender well and modules under the dash and while I understand the concept, it's not something I want to mess with. Additionally, since I'm not local to the shop that did it, if anything were to go wrong, I'd have to deal with it on my own or find a way to get it 5.5 hours to the shop or find someone else closer, which I have not yet found. For the positives, it's like a mini NOS boost when it engages, kind of fun. Additionally, it's cooling down the intake temps and lastly, it's keeping everything clean internally. I'd probably opt for a different route, like a DoD delete with new pushrods, lifters, springs and cam. But that's going to be much more costly. I might end up doing that in a few years anyway and that point, decide whether to keep the Alky or remove it.

Wasn't that the springs debacle back in mid 2020 to March 2021? I think I looked after mine arrived off the truck and it was an April build date on the engine so I was relieved. NHTSA's site says I'm part of this current recall, but I need to get under there and check again for the exact date. I'm not even sure it's worth my time to take it to the local dealer given my upgrades. Just swap out the oil and pray nothing happens until I get the funds and replace all the internals myself. I do have a decent report with them...I suppose the worse they can tell me is no.

With all the updates/mods I've done to mine, I too have spent a considerable amount of time looking and reading. The local car accessories shop installers don't seem to think I need anything over what the truck is outfitted with, immobilizer/fob, however I've watched and read about how easily those are defeated too. So I disagree with their assessment and have been looking at this item that installs an E-Lock relay kill switch, among other items. With the price of kit and installation being around $900 total, it's not for the faint of heart, but does provide real time monitoring. Course it's a subscription model to get that real time monitoring, which I'm not a fan of, so that's a negative. I'm a firm believer of 'if there's a will, there's a way' and if they want it bad enough, they are going to take it. However making it harder and more risky is the key so that they look elsewhere and I think this kit does that.

I've been doing some searching as well. Posts here and on other forums led me to these guys. I'm not quite ready yet, so I haven't reached out https://eastcoastgearsupply.com/c-1206391-gears-install-kits-carriers-spider-gears-general-motors-gm-9-76-12-bolt-ring-pinions.html

That's who I used. They are great. I found them by just searching online and then @kodiakdenali referred me to them as well. Unfortunately they are a 12 hour round trip for me. Just so your aware, doing the Whipple gets you the Whipple static tune. There is no customizing it beyond that. Whipple encrypts it so he's unable to see what they've done. If you want to do the Whipple and a custom tune, that's something different where he has to start from scratch essentially. If this were my daily driver, the Whipple tune is pretty good and fairly refined. It leaves some HP on the table as I've mentioned previously, but if you want a good amount of power and reliability, the stock Whipple tune is fine. His trans tuning brings it all together though imo. If this were my daily, I might have it adjusted slightly to be less harsh on the 1-2 and 2-3 shifts, but for me, it's great.

Yeah, was the package from GM accessories site and installed by a local dealer. I'll pull the passenger side off tomorrow and check it as well. Here's a short video I did this evening of my trying to rotate it. There are no other issues aside from that..no pulling or anything On the Whipple. yeah I posted something back in March..here's the link. I'll be posting more there relatively soon. I've done a fair amount since then.

Let me preface this with that of all the things I've done myself to my trucks over the years, I've never done my own brake job, so I'm not intimately familiar with brakes. With that said, a few months ago, I got the GM Performance brake system put on at the dealer and noticed pretty quickly that there seemed to be more resistance to a free spinning tire right out of the gate. It's not my daily and park in a garage, so when I go to drive it, will start it up, put it into neutral and it will roll slowly out of the garage onto the driveway and by the time it does, it has usually calmed down to it's normal idle RPM. However since getting that package installed, It won't roll out and only moves a few feet. So over the weekend I pulled off one of the front tires and was inspecting the brake setup, among other things, and noticed that I could not very easily spin the wheel. It takes a little bit of muscle to rotate it and it's not free spinning like the OEM's were. I could tell that the pad was pressed up against the rotor more than I would think it should be, creating the resistance. However I don't have any experience in this area. Are big brake kits supposed to be like that?

I'm still curious as to the reason why you'd need an X pipe to begin with. Some sort of backpressure sensor issue or something?

So your running two mufflers and not one, correct? The S-type for my truck has both pipes going into one muffler. Perhaps that's the difference that is needed? You have a pic of underneath?

Just watched a YT video of a review that several months after installing the True Dual setup from Borla on his 2020 Chev. He said he noticed some peformance decrease and drone and reached out to Borla about it. Borla confirmed that you needed some sort of X pipe to overcome this issue. He reached out to a local shop who also confirmed this and they created him one. After installing, it's changed the sound to something higher pitch, which wasn't desirable and the drone inside the cab hasn't went away. Anyone else have the true duals and have any experience to share? I'd been considering this if the true dual S type ever went on sale to compliment my setup a bit more, but this experience is concerning.

Do you remember what the stock ride height difference was originally? I ask because I've done the Bilstein 5100's all the way around, position 3, like you have and the difference is 2" between front and back. With my 34's I'm at 41.5" in the back and 39.5" in the front. I lost my original measurements somewhere and don't remember the stock rake. Just seems like it's more than it should be. I've jacked up the truck to look and make sure the shop did it right, given my other thread about the lack of replacing the nut on the UCA, but it appears right. I even went down to the local GMC dealer to measure the rake on their new stock AT4 and AT4X. The X had a 3" rake from back to front while the AT4 only had a 2. I couldn't get inside to see what mileage was on either rig as the sales people were busy with other folks. Does anyone know their rake or could measure it on their stock AT4?

So to be clear and maybe I wasn't, when I called from Discount Tire, I did ask for and speak to the Manager who told me to bring it down when I got done getting the tires done. When I arrived, the guy that met me at my door, was aware of my issue already. So that tells me that the manager told him about what'd happened and that I was coming in shortly. However in all my experiences with that local LS over the past several years, I've NEVER had anyone meet me at my truck. They seemed to have stopped that practice many years ago. So that tells me that the manager instructed him to come out and talk to me prior to going inside and telling the story to the front counter person where the rest of the waiting customers could hear. Bottom line, in my view, is if they were interested in making sure it was done right, they'd of been told to bring it in and put it up on the rack to make sure it was. At this point I honestly have no interest in wasting anymore of my time dealing with their management for something that should've been done right the first time and shrugged off a second time.

Yeah, held by clips and they aren't that fun to get to unless you have small wiry arms. I replaced mine with some from iKonic, the LED ones. I ended up braking one tab on each trying to get the OEM's off. The furthest one back is a bugger

I was searching for replacements on my AT4. Came across another thread here from last year I think. Can't get em...they never offered them outside brand new rigs. Same thing on the AT4 badges in chrome, can't get replacements for them. Sure you can get all the aftermarket ABS plastic ones, but GM doesn't offer them at all through parts or accessories... Kind of weird if you ask me.

I did over the phone prior to going down there. I'm not sure who met me in the parking lot, but they were already aware of the situation

While I tend to agree. I'm confident it's fine. I also do not see any AT4 kit on Bilstein's site. They do offer UCA's as a separate item that appear to fit my truck, but those aren't exclusive to the AT4/TB.

Fair questions. There's a Home Depot in the same parking lot. They said they had some tool to determine the thread and ran over there to get one while I contacted Les Schwab on the phone. It was definitely not in the same category as being close to what should've been on there (one they grabbed was larger and no washer) and definitely not torqued correctly either. DT said they made sure it wasn't going anywhere for my drive. I made that clear to the guy who met me in the parking lot at LS..more than once. IMO, they should've taken it in and pulled off the tire and at the very minimum replaced what was on there with something that resembled stock and made sure what DT had done as a temporary measure, was done to LS standards since they took on the job initially. Very unprofessional and completely against what I grew up when it came to their customer service. 10 years ago, they'd of brought it in, put it up on the rack and checked everything to make sure it was right before sending me on my way. I still haven't posted the review. I'm still lamenting if I want to deal with the aftermath when I do. Being a small town, I'm sure they'll try and contact me in an attempt to save face. Is it then worth my time to even deal with them