Silver Yeti

Maybe so, LOL.

The build sheet for my truck says that it was built in the United States, which I'm hoping is true. I've looked at other trucks where their build sheets said they were built in Mexico and when I noticed it, I made sure to steer clear of those trucks.

I'm sorry to hear about this. I just bought my truck 2 months ago, 2021 Silverado 1500 RST with the 5.3L L84 V8 and the 8L90 8-speed transmission. It had 35,875 miles on the clock when I bought it and I'm coming up on 37,700 miles now. I traded in my 2019 Colorado with the 3.6L V-6 which also had the smaller 8 Speed transmission. Anyway, I have a buddy of mine who has been driving Chevy Tahoes for a while & he warned me about the 6.2L V-8's and said that there is at least one class-action lawsuit against Chevy/GM, because of all of the problems and blown up 6.2L engines that are coming back to GM, while they're still well within their warranty periods. I know the 5.3L's have some of their own issues, as do the 8 speed 8L90 transmissions, but I feel pretty confident that I've addressed most of the common, known issues. I would be curious to hear what the dealership tells you. I've heard some pretty horrific stories, about how GM/Chevy has been handling these 6.2L engine failures. EDIT: I just read your response that the dealer o.k.'d an engine replacement. Pretty amazing that they have none of these engines in stock - that's a big FAIL for GM. Honestly, if I were in your position - I would not want another 6.2L, but that's your decision.

My 2021 Silverado 1500 RST with the 5.3L (L84) engine came with DFM, but thank God for the "Range" AFM/DFM disabler module, which plugs right into the OBD-II maintenance port. The best $300.00 I ever spent. Range Technology RA003B AFM/DFM Disabler

Bought my 2021 Silverado RST Double-Cab 2 months ago, and have done a few moderate upgrades. She has the 5.3L L84 V8 & the 8 speed 8L90 Transmission with the Z71 Off-Road package w/skid plates & a couple of different comfort & convenience packages. I fixed the cab rear window leak already - it wasn't a bad leak, but it definitely needed to be addressed and I took care of it in very short order. Post here: Added the PPE Transmission Fluid Thermal Bypass Valve, "Range" AFM/DFM Disabler Module, swapped out the stock transmission fluid with Mobil 1 Synthetic LV ATF HP Transmission Fluid, and upgraded the engine oil with AMSOIL 5W30 & Long Life oil Filter. I just wanted the truck to be mechanically sound, so I addressed all of the common, known issues that I was aware of. As of now I have about 37,600 miles on the clock. I swapped out the chrome factory side steps with some "Real Truck" off-road side-steps in black bedliner finish, I like that they fit nice & tight, up to the bottom of the door-sills with very little space in between and your feet will NOT slip off of these steps - even when they're wet. I also added the Weathertech hood/bug deflector. She's nothing fancy, photos below:

New member here, I have a 2021 Chevy Silverado 1500 RST Double Cab with the 5.3L L84 and the 8 speed 8L90 Transmission which I bought almost 2 months ago, back on April 13th 2026 as the 2nd owner, the truck had 35,875 miles on the clock. I was aware of this rear window water leak problem and I carefully checked the headliner and the rear seats in this truck for any water stains, when I initially went & looked at it and I didn't see any water stains present. Sure enough, the first heavy rain I was out in, I saw some water drops on the top of the rear seats, but the headliner remained dry. It wasn't a massive leak, but it definitely need to be fixed, so I wound up finding 2 YouTube Videos, which were very helpful in showing me how to do the job. One was a video of the actual repair itself, which invloves completely filling the outside top seam of the rear windhield with ATV/Silicone and the other video was a how-to, on dropping the headliner. After I noticed the leak, which was on a Thursday, I took that very day (Friday off) and tackled the repair job. Looking at the cab's rear window, I saw nothing obvious that was wrong, so my guess is I had some small hairline crack somewhere in the plastic trim that goes around the cab's rear window, but nothing plainly visible, like the guy in the YouTube video had. Looking really closely, I could see some old water drip-streaks coming down the inside of the rear cab window, but you had to look really hard to see them, but again, no obvious cracks in the plastic trim around the rear cab window were visible. It took me about 9 hrs from start to finish, but I was really taking my time and being methodical about it, trying to ensure that I didn't break anything while tearing the interior apart so I could drop the headliner to get at the nuts & bolts that hold the third brake light assembly to the rear of the cab. All things considered, the job went pretty well, albeit time-consuming and tedious. But it fixed the leak, so it was time well spent and I fixed that problem in very short order and don't expect that it will EVER be a problem again. Somebody that's more familiar with how to drop a headliner and who's more mechanically inclined, could easily shave 2 or 3 hours off the amount of time it takes to complete this job. Like I said, I was really trying to not break anything while taking the interior apart. These are the 2 videos I used for guidance; While the video of the repair itself was useful, it didn't go into any detail about how to drop the headliner, so the 2nd video was really key, in getting the job done. Hopefully, this will help some folks.