Nightfly

Is the dealer going to fix it, or do they consider it normal wear? What kind of mpg are you getting? I'm really not! I drive like a grandpa. The dealer said I was lucky to get 30k. They have people change them out before 20k. I asked why GM would put such crap tires on. The dealer said, "They're not crap...they just don't last!" Thanks for the replies. I went to the dealership this morning but they didn't have any AT4's to test out. The GMC close by isn't much of a volume seller so they never have a great selection. The manager said he would trade for one this week so I could test it.

Long time lurker, noob here. I had an 18 Denali 6.2 as my first ever truck after buying Honda cars all my life. I had no idea what I was buying, just loved the way it looked. And then I loved every bit of it. Rode like a Cadillac until about 24k, had power and grace, then got the torque shudder. Dealer "fixed it" with the tranny flush, but it was never the same again. I couldn't convince the dealer that everything was just not the same as before. I got to the point where I hated driving it because the ride was terrible, felt every road imperfection, had noticeably bumpy deceleration, and the leaf springs squealed anytime they moved. Dealer said new tires were needed as the stock 22" Bridgestones ran out of tread at 30k. I pinned my hopes that new tires would cure all ills (except the leaf springs). The day I put on new Michelins the truck was stolen, never to return. So I'm back looking for a new truck. Won't buy RAM, don't like Ford, hate the Tundra. The Sierra is still my favorite out there, even though I prefer the boxier style before the '19 redo. I'm looking for advice from the truck pros on whether to get the Denali or AT4, and would consider an optioned SLT. Main concern is comfort - I loved the smooth ride of the Denali, but if its going to fade in a couple years then I suppose it doesn't matter. Is the AT4 smooth? I like the looks of the AT4 much better, but I do not off-road, and likely never will. My driving is about 75% city. I don't tow anything, and probably never will. I like the tech packages. I am mildly concerned with fuel economy - was getting 17.5 mpg from the 6.2 Denali with 87 gas which included 30-45 minutes of idle a day from pre-starts and eating lunch on the road in a parking lot. Happy with that. From what I understand diesel isn't a good option for me given the lack of long-haul driving. Just don't want to see 14-15 mpg average. I test drove a 5.3 briefly, and noticed it didn't have quite the get-up as the 6.2, but wasn't a deal breaker. I drive in the right lane on the highway, but liked the power of the 6.2 in the rare cases I needed it. All that said - what would you do? I feel like I want to love the AT4 due to style, but the AT tires I've never been on and don't know if they are appropriate for 100% paved roads. Any thoughts are appreciated!