Don't do it. No really big changes until the 25s. The 5.3 is a dog vs the 6.2 in a full size, and the lifters can go out on either one. Get the diesel if you want better reliability and MPG...
Sorry, didn't see that since you followed up with the front dif question. The TC takes more of the abuse in your dubious drive mode choice; 140k in auto sounds like a pretty good run for it. I second getting it up on a lift...
Just to clarify, the Hellwigs were instantly noticeably better while the Hotchkis kinda feel better. I know its almost double the price, but I wont buy Hotchkis again...
Corsa Touring cat back is the answer. Not cheap, but this week is the best time to look for one. I had the Corsa Sport on my 5.3 burb, and it never droned on hwy, but jolted neighbors awake on cold starts...
Ebay has them from time to time - keep an eye out. I had one for my 13 Avalanche and have my current one, and both were purchased used off ebay. $250-275 and when you sell you get it back, just make sure its not locked. I had to upgrade the license for my 18s ($50?), but the 1 license worked for...
You 100% have Magneride. I replaced mine a few months ago with AC Delco Z95 shocks from Rock Auto. I did it myself except I had a local shop do the spring compression for the fronts = you have to reuse springs (Im fine spending $60 not messing with that). OEM do not come with a full strut with...
What about the 2 beers you get to drink while changing your own oil - will the dealer let you drink em in the waiting room? Jokes aside, its a good price if the dealer isn't too far away. I still prefer doing my own since Im done in 30 minutes...
Carmax gave me 39K a year ago for my 18 LT burb; I HAD to take that for a 5 year old truck. I saw it listed a few weeks later for 47K and it was gone in 2 days. Crazy! Carvana only offered 31K. So I drove a carmax 2020 MDX Aspec for the full 30 days and turned it back in (just not my style}, and...
LED were better than stock on my burb, but I really didn't like my lighting until I added a fog kit that uses H8/11 bulbs - which I also added LEDs to. Even on my Denali with HID, I have to use my fogs to see worth a damn...
Yeah that damn 6.2 rear dif cover was kind of a PITA to remove and replace - I had to pull the panhard bar to get it off and on. I had my eye on a Yukon cover on AMZ but it was for a 5.3 drivetrain. Cheap would be to drill a hole and add a helicoil with a plug. The only thing is its not needed...
So the seats have been progressively firmer from gen to gen - my 2004 had super puffy bolstered lux; the 2018 Denali - not so much. The trend has been to keep up with euro specs which is firm. If you already have the 6.2 (which is worth it every time when it comes to upgrade) just go to an...
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