DanielAcosta

Yes. Toyo A/T close to that size for the first 55K miles, BFG A/T KO2 for 14K miles since. Smooth all the way. Fuel 20 inch wheels since day one. I've driven about 20 Silverados and Sierras, 14-16 model years, and all have been smooth except for one 16 Silverado crew with 5.5 box. Currently have my 14 Sierra crew 6.5 box and 16 Silverado crew 6.5 box. They're both 4x4. The Sierra is non-Z71 with aftermarket wheels and tires, the Silverado is a stock Z71. Sierra has 69K miles, Silverado 2,500. Both smooth. Both 5.3 6-speed. Both averaging about 20mpg overall.

ABCMan I think yours is the best looking lift/tire combo I've seen. You can see from my photos that your tires fill the wheel well much better than mine. For the first 51,500 miles I ran Toyo 275/65R20 (34" tall), then switched to BFG AT/KO2 275/65R20. Since they are the same size, no surprise I had the same results in that I can turn full lock without rubbing, but just barely. Like you, I'm surprised by the poster saying he is rubbing with smaller tires. I think the issue is all level kits are not created equal. My wheel wells measure 40", which is 4" taller than stock in front. I'm guessing the ABCMan's is 1/2 to 1 inch taller, and the guy who said he rubs at full lock probably measures a little lower. So if you all have a moment, please measure your wheel well height and post it so we can all learn, thanks!

I've had a Lo-Pro QT on several tucks, each iteration has a little detail or two that makes it even better so you won't be disappointed. AutoAnything has great prices and offers the best price over the phone vs their website. Self-install is really easy. Enjoy.

34's did not require trimming, at least for me. See my signature block and photo gallery for more details. Smartest solution is to have your shop do a test fit before committing the $$, that's what Discount Tire did for me.

5.3 4x4 3.42 with small lift and 34" tires, pretty happy with 20mpg overall for the first 37K miles. The OnStar app says 21, but it rounds up; the actual number is 20 point something, and the truck computer is a bit high (measured mileage at the pump is about 1/2 mpg lower than the truck says), so 20 is realistic. For those wondering about the displayed recommended tire pressures, that's what I had the dealer program in to the truck's BCM during one of the software upgrades. I picked low numbers so I wouldn't get nuisance lights during the winter when the tire pressure naturally drops. I actually run the pressures shown with an empty bed, load range E Toyo all-terrains.

Fresh grease in the zerk fittings solved my creak.

Mostly 87, occasionally 85 in parts of the country that sell it.

While the software updates can be irritating, they do work.

It wasn't the HVAC module, it was the large radio display in the center, but the fix included the HVAC system which apparently runs through that display. When you go in, just ask them to check to see what outstanding updates are available for you, and if you're still less than 36K miles it should be done no questions asked. The particular update I just had done was to the HMI module. You are correct in that sometimes they do ask for a symptom that matches the needed update, so I gave them a couple. Here's what the repair ticket says: Radio favorites will disappear and then come back after key cycle; voice prompt length changes itself to long after being set to short; reference PI 1126D. Performed PI 1126D, reprogrammed HMI module 2881168 I think the 2881168 might be an internal code and what you really need is the PI 1126D There is a sequence of buttons they press on the dash that pulls up your software version; if the latest software version is newer, you qualify for the upgrade. I wasn't aware until after the fix it would improve my A/C performance, but it did. Specifically, the fan speed is more gradual in its speed changes, it doesn't use recirculate as much, and when I hit the A/C button to manually turn the A/C off it turns off right away (before it would think about it for awhile). I've had so many software updates in the short 15 months I've owned this truck I have lost count. On the one hand it's frustrating, but on the other it's good that each update has made an improvement. So whenever you're in for service, check to see what's available. Good luck with yours.

Don't know if it leaves a trace or not. Just did another software update at the dealer today, deprogrammed Hypertech before, let the dealer do their thing, then put Hypertech back in. No issues. BTW, if you're on the fence about any of the software upgrades, do it. Every update I've done in the last year has improved something. Today's update improved the a/c operation and phone syncing, along with improved radio and DIC performance. Best to get these done while you're still under warranty, because it's up to the dealer and GM to goodwill these updates after the basic 3/36 expires.

Not sure about the Truck Cover brand, but with a Truxedo Lo-Pro QT you still have full use of the stake pockets.

Just to clarify, the speedometer calibrator is the same as a tune because it reprograms the truck's ecm, so treat it just like a tuner even thought all you're changing is the tire size to correct the speedometer/odometer. For mine, the most accurate results were obtained by putting in a 33 inch tire size (even though they are 34's) because 33 is the height with the weight of the truck on the tires. I did a lot of experimenting in 1/4 inch increments, then checking with two gps's, before finally coming up with that result. Take the time to experiment with yours before settling on a final number.

Yes, it will get messed up if you don't return to stock before having any ECM/BCM etc work done by the dealer. If they are just doing routine service, no big deal you can leave the Hypertech tune installed. But if they are plugging into the port under your dash to make any changes, return your truck to stock, let them do their thing, then program the Hypertech again. Takes about 10 minutes to return to stock, then another 10 minutes later to put the tune in again.

Tried to respond to your message but couldn't get it to work. Regarding my truck: No blocks in back, 2.5 inch lift in front that was dealer installed before I bought it, so I don't know what brand it is. Tire size is in my signature block on all my posts. Good luck with yours.

It will correct the shift points and V4 operation, which in turn improves your fuel economy. After 34K miles I'm still averaging 20mpg overall, which seems pretty good to me for a 4wd lifted truck with a stock epa rating of 16/22/18. Take time to calibrate yours with a gps for best results. Even though my tires are 34 inches tall, the Hypertech entry that worked best for me was 33 inches, which is the height of the tires when compressed by the weight of the truck. Good luck.