Logan Lanfear

You can get them pretty cheap off rock auto. I would for cheap insurance. Id hate to get everything together and have them start to leak.

You are working with a lot more gears in the transmission in your 2019 compared to your 1989. I bet it would be fine but your speedo will be off without a tune.

How helpful But yeah I suppose you could but the size of the project might make it not worth it. Decent bit of wiring. Why do you want them? Just for more safety?

I'm sure someday they'll catch on. Green energy generation and battery tech is advancing everyday.

GM strike, my local shop has a truck waiting on a bearing as well. Won't see them until the strikes done.

Living on a gravel road in rural Vermont, i'd argue that my gray stays much cleaner than any white vehicles ive seen. But that's just my opinion.

A synthetic gear oil. Recommended would be found in your manual. I'm guessing its a SM-465 which has the granny low with 3 more speeds. Most go with a 85W-90 with a GL-4 rating. Stay away from GL-5 it will eat your synchronizes.

Fuse would be the first check. It might be a relay I cant remember off the top of my head.

Id be willing to bet your losing power with only a straight pipe with no restrictions. They benefit from a little back pressure. Do you still have your Cats or any muffler?

We could go back to the 80's. My 1982 GMC K2500 (6.2 Diesel and TH-400) had 2.56 gears. It would cruise very nicely at 60-65. These new transmissions really make up for a low rear gear. 3 speeds vs 6,8 or even 10 is no comparison.

Haynes manuals are pretty handy. They can be ordered online or even are available at most parts stores.

https://www.rockauto.com/en/catalog/chevrolet,1993,blazer,5.7l+v8,1050714,suspension,control+arm,10401

I would say you posted this in the wrong sub forum.

Hows your fuel pressure?

Id start with your fuel pressure test. Might as well get all the info before you try and diagnose.