TxTruckMan

Fort Worth

The Discount Tire shop near me is pretty good about buying back older tires kind of like a trade in. So you could go to them and see what a new set of tires would cost you with a trade in of your old tires if you're that interested.

Don't count on it. GM usually applies these types of updates to future vehicles and rarely pushes new features back to older vehicles. This will incentivize you to trade up to a new vehicle.

Hey there everybody. I know this is an older thread but I wanted to share some info I learned on these shocks. I’m at 65,000 miles on my 2021 AT4 and was looking for some shocks to replace my original Ranchos. Somehow I found a brand new full set of ZR2 suspension (GM 85640298) local on FB marketplace for $1800 and couldn’t pass it up. The rear shocks were the same part numbers as listed earlier in this thread - 85599366 & 85599367. But the fronts were different part numbers - 87817370 & 87817371. I installed everything over the weekend without any issues. The rear leaf springs looked to be an inch taller when uninstalled on the ground next to the stock AT4 springs but installed I can’t tell any difference. I suspect they’re softer and eat up the inch under weight. There’s also a replacement bump-stop plate that allows an extra 2-3” of rear travel. I wasn’t expecting that when I picked up the set. The fronts were a little harder to install as all the info I found online said you could install the struts just by disconnecting the UCA. You can’t and also have to disconnect the sway bar and remove the rear brace from the lower CA to R&R the struts. No big deal after I figured it out. I’ve only driven on them for two days on the highway so haven’t really tested out the suspension. I can definitely tell the setup is softer than the stock suspension. I’m probably headed to my hunting lease this weekend so hope to get a better feel them off-road on some rocky/gravel trails. They’re obviously better than my 65k mile Ranchos. I hope this info helps someone else out there.

It’s bad for your engine. Don’t do it regularly. Occasionally is ok.

80 PSI? Wow. I bet that's a rough ride!

I just had this issue pop up about a week or two ago. I have my mirrors set to lower when in Reverse. Of course they go back when switching to Drive. But I just noticed that they now chatter for about 3-5 seconds when they move back. Both sides do this. Anybody else experiencing this issue?

It’s okay to admit when you’re wrong. If every part was built to the same size and spec we’d all be driving the same trucks! You’re the idiot that didn’t do the research before you bought it. Don’t get mad at GM for giving the rest of us different opinions that we want!

Yep. Streaming music from Apple Music is a breeze and sounds great. I never listen to anything else these days.

Yep. Get the seatbelt tight and you will be fine.

I’m not a fan of bed caps. They all look cheap and ugly. Get a cover or nothing at all.

35k miles on mine and no chips at all. I drive lots of dirt roads. I assume it’s because it’s painted plastic instead of hard metal that helps prevent chips. My front bumped has tons of chips. I love the painted wheel arches. It makes the wheel wells appear smaller. Do it. You won’t regret it.

And FYI the GM and Ford 10 speed trans are the same design I believe. Designed by Ford.

My last truck was a Denali with 22’s. The ride was great. I had no complaints. You will barely notice a difference switching to 20’s. The weight is negligible for ride. Only the sidewall makes any difference. The 22’s will handle better while the 20’s will have a very slightly better ride. 22’s look MUCH better. Just watch out for curbs.

I'm pretty sure that it does not have the factory 2" lift. Unless something has changed recently, only the Trail Boss, ZR2, AT4, and AT4X come with the factory lift.

Oh, cabin filter. My bad. But the AC does run at different speeds. So my comments still apply!

Well, you do get better filtration the longer you let it go! At least until it's completely clogged and no air makes it through. It would be the higher RPMs that would notice the restriction first. You have more flow margin at the lower RPMs.

I just got a set of Michelin Defender LTX AT2's a few months ago and I'm not totally happy with them. They are the AT version, not the Highway M/S version, so there are obviously some differences between the two. I came from a set of Goodyear TrailRunners and the Michelins are several pounds heavier and noticeably a stiffer ride. I think Michelin gets their longer thread life by using a harder rubber compound. So you have to consider if that's something you're willing to trade.

The whole point of the Oil Life Monitor is that you don't need to track miles. The OLM tells you when you need an oil change based on your specific driving conditions. I change my oil when I get to 20% remaining.

No impact to the HUD at all. Definitely worth it to prevent the heat coming in while driving. I’ve been amazed at the difference.

Looks great! I also went with ceramic all the way around including the front windshield and the results are amazing. A must have for here in Texas.

You went to the Walmart of car dealerships and you had expectations of professionalism? Lol. Another example of you get what you pay for. Best of luck!

People make the biggest deals over the stupidest stuff. One mistake over a refund and you’re warning people against using a dealership? By your logic every store in the country should be out of business. Geesh.

Spark Plugs are not really a wear item. You should check them at 100k miles, but I wouldn't replace them unless they were showing signs of being fouled. With good fuel you should be able to get double that easily.

That's not what we're talking about. We're talking about the overlap areas between the adjacent cameras. They appear to have become skewed after the recent update. Previously the lines within a parking space were all correctly aligned between the various cameras. Now some of the lines are offset and do not track from camera to camera. Something has changed in the camera alignment algorithm.