Transient

I'm no expert, and I'm not a fan of diagnosing vehicles over the phone (literally, since I'm view the forum that way), but it does seem the dealer may be correct about this one.

You can always grab a can of spray paint and paint it yourself

If you aren't already in a database somewhere then you're not living your life correctly, lol

Mathematically 285/75 R17 works out to be just under 34". I don't think you'll need a lift, nor do any trimming. I do have concerns about spacing from the upper ball joint. If you're using the OE wheels you may need a spacer that's 1/4"-1/2" thick.

Disregard. Somebody else said it.

I'm sorry I dropped the ball on this thread. I've been very busy getting ready for a cross country move. It was the button on the tailgate. RockAuto.com had a new one for $20 plus shipping. Total came out $25. Very easy to replace. Open tailgate, remove large black plastic cover on tailgate. Remove 2 bolts holding plastic assembly that contains switch, rear camera, and light. Unplug switch. Remove plastic assembly by pulling on it from the outside of the tailgate. It's held on by 2 tension clips, but not difficult. I did the pulling with my bare hands. I didn't need tools for that part. Unclip switch from plastic assembly. Install new switch and put everything back together in reverse order you disassembled. Took me only a couple minutes, and I'm not a professional mechanic. Maybe 20 minutes max since I only used hand tools. On a difficult scale of 10 I give this a 1 or 2 as long as you have the right tools. Iirc the torx screws keeping the plastic liner on the tailgate are T20 or T25, and the 2 bolts holding the switch assembly onto the tailgate were 10mm. I did need a pick or very small flat head screwdriver to remove the switch from the assembly.

Did you try filling it with fuel?

Oh, boy! I can actually relate to this one. Lost a 2007 Tahoe is a similar way. Wife was stationed in Chicago, but we had to go to Utah for my wife's grandmother's funeral. On the way back to Chicago we stopped in Laramie, Wyoming to get gas and dinner. I checked the truck over and made sure everything was fine, including the oil being full because I'd recently started experiencing oil consumption issues, and was getting the run around from dealers in Norfolk, Virginia (where we had just moved from) and in Chicagoland. 2007 was the first year of cylinder deactivation, and GM had the 5 year/100,000 powertrain warranty standard. After getting some food I got back on the freeway, and set the cruise control. As soon as we started making the climb up to Cheyenne the truck shifted down 2 gears and the engine went, too. Managed to limp it to a rest area nearby, where it was freezing cold, and called for a tow truck to get me back to Laramie and to the Chevy dealer. I only had 1 kid at the time, and they were 2 years old. The dealership was as helpful as they could be and rushed the truck into the shop, jumping ahead of other customers that already had their vehicles there before us. The truck had about 96,000 or 97,000 miles on it. GM tried making the claim that I was negligent in the care of the vehicle and refused to honor the warranty. Which wasn't the case. I did my own oil changes, etc to reduce the cost because I worked for an auto parts store while I lived in Virginia. My options were to have a new engine installed with 100% of the expense out of my pocket, or by a new vehicle to get home. A replacement engine would have had to come from Denver, and took a few days, plus the time it took to install. My wife called her command and they told her she needed to get back to Chicago immediately, so we dumped the truck and crammed everything we had into a Malibu. The car was over loaded with gear. My kid literally had no space beyond his car seat and my wife had stuff on top of her all the way home. It wasn't until a decade later that I decided to buy another GM vehicle. I did so while holding my nose, knowing I might experience another similar problem later on. Not only do I follow the owners manual service interval exactly, but for things that directly affect the engine, such as oil changes, I go to the dealer so there's no way they can claim I was negligent in the care of my truck. In hindsight, one thing I was I did differently was not buy the Malibu. It was a daily reminder of getting kicked while I was down and being stuck in that situation for years when I didn't do anything wrong. I loved that Tahoe until it broke. I was hoping to have it for many more years, and buying it made me feel like I was finally building the life I wanted to have. I should've looked into getting myself and my family onto a Greyhound bus and finish the trek to Chicago, and have the truck transported home too. Once it got it home I would've rebuilt the engine myself. I love my 2020 Silverado, and understand the Tahoe situation has a possibility of occurring again (fortunately, my kids are now older). That is a risk I assumed when I chose to purchase the truck, and should there be a repeat of my previous experience I will not hesitate to handle it differently. With that said, things break and many businesses are a-holes. It's a good idea to be able to lookout for yourself so when bad things happen you can handle them yourself instead of relying on somebody else that'll refuse to help when you believe they should. OP, what can you do to help yourself in this situation?

I don't have any experience with AFM removal. Just wanted to let you know your truck doesn't have AFM. It has the "new and improved" version called DFM. The difference is instead of a V4/V8 mode it has 17 different modes for deactivating the cylinders that can go as low as only 2 or 3 cylinders running. As for tuning the other items you mentioned, GM locked these trucks down really well. I read an article awhile back where somebody at GM said you'd need several computers working together in the correct sequence to unlock the ECU. As far a I'm aware the only method to tune the truck is to buy an unlocked ECU and have HPTuners program it. Iirc, that'll cost you about $2,000.

That should rule out step #1 then. Maybe the remote crapped the bed?

Gucci is better, imo. Forget that Chanel garbage. In all seriousness though, try wiggling and adjusting the window visor. I've had no issues with mine since I installed them almost 3 years ago.

Stupid question, but did you install the battery correctly in the key fob?

If you have a full warranty I recommend contacting your local Department of Consumer Protection. The dealer is required to honor GM's warranty.

How long did it sit? You eluded to the dealer making such a statement, but never told us how often you drive it. My wife's car sat for 5 months while she was deployed. The battery died. I had installed a new battery in the car only 4 months prior to her leaving on her deployment. I knew I should've installed a battery tender, but was lazy and didn't. There are no other problems with the car, and in this scenario it wouldn't matter if she drove a GM, VW, Toyota, etc. It would've still happened. Fortunately, her battery was replaced under warranty since it was less than 1 year old.

From my couch the first thing I would recommend is try swapping out the knob. It's merely a switch, and it's possible it could be malfunctioning.

Did you scan the computer, or contact Onstar, and find out what the code is? I highly doubt the bowtie is the problem since it's a simple plug and play into the truck's electrical at the driver's headlight. If the bowtie was going to be the source of a problem it would've been nutcracker at the headlight.

I tore into the tailgate last night and can't find any other issues. I have started looking into how to test the switch with a multimeter.

Before the flaming starts, I've searched the forum and Google for my specific problem, but I'm not finding it. 2020 Silverado Trail Boss LT with 45,000 miles. No power lift, no multipro. Just a standard dampened gravity drop tailgate. I do have a tonneau, but the tonneau is not the problem nor has it been a problem for the last 3 years. Today I went to the grocery store to buy groceries for my family. When I walked outside to put the groceries into the bed of my truck the tailgate wouldn't open when the button on the tailgate was pressed. No click, and the tail lights didn't flash. I tried a few times, but got the same result. I then tried the key fob and the tailgate opened. The switch on the instrument cluster also worked when I got home with the groceries and parked. Playing with the button on the tailgate I was able to get it to open only a few times, but most times there was no click or flash of the tail lights. Do you think button on the tailgate has failed, or could it be something else? The button has been used almost daily several times per day. Is it possible that it is just worn out? Btw, I'm in San Diego, CA. This is relevant, imo, to point out that I don't think this is weather related. Weather here is far from extreme, even when at its worst. I don't think wear or damage could be at play here. If anything, I think I could be just looking for a confirmation of my suspicion. If I'm wrong please point it out.

What if it was a computer glitch?

Sorry to thread jack, but I must ask. What was it like flying with Maverick?

I agree California sucks, but not looking forward to the humid weather. Military orders. Unfortunately, I've had people tell me that those who leave California are failures who couldn't make it in this state. My departure has nothing to do with success or failure. Edit: I'm originally from Utah

I always press the OnStar button whenever an indication light comes on and ask the rep to run a diagnostic. If they find anything I have then send the info to my email.

I'm in San Diego for the next 8 weeks. Moving to Florida on July 1.

Fact: There's nothing you can do to prevent me from saying whatever I want. Deal with it. Secondly, that's not a background check. All that info is public record. Feel free to take a look at www.truepeoplesearch.com. Good for you for walking away. I would too.

If you're talking about what I think you are, you got your DSSVs via the junk yard. Nothing wrong with that. Just a matter of time until the junk yard figure out what they have. Iirc, that's been discussed in another thread.