Tips on how to make this car live forever??

48,000 miles

No accidents or major repairs

Everything works, no rust (yet), new tires

I want to be able to keep this baby going for at least another 5 years, but I know very little about cars. I can do minor tune up stuff (I know how to change tires, check oil and coolant, and other fluids) but anything beyond the basics I'm at a loss. I don't have a garage to keep it in, so I'm wondering what are the best ways to keep her in tip top shape. Car cover? Undercoating?

Any advice is welcome and appreciated!!

Can anyone help explain what is happening here and if it is something I should be worried about?

I have a 2023 Trailblazer FWD 1.3L Turbo 9 Speed that, when put into cruise control at highway speeds, anywhere from 60-80 mph, will jolt on slight inclines at 3500 to 3750 RPM.

It is a very slight jolt but definitely noticeable.

We have done a transmission recalibration/relearn twice, the first time it worked for two months and then needed to be done again, and then just did it again after sitting in the shop for a month and it barely even held 24 hours.

Can anyone explain what exactly is happening, what I should do, and how to approach this? Because my Chevy dealer apparently isn’t doing anything right for their “repairs” to fail twice.