I have owned my 1997 Oldsmobile Bravada since new and I've noticed that there are a few things on it that have been crazy reliable.

The truck has 179,000 miles

First off I've never changed the rear brake pads. The rear pads have 179,000 miles on them and every time I go to get my tires rotated they tell me I've got about 20% life left on the pads. The front pads lasted me 138,000 miles.

I've never replaced a headlight. The headlights have never gone out and I have daytime running lights. I think the daytime running lights are a completely separate light but they have never gone out either.

 

If rear pads aren't wearing at all, they may not be working! They should wear less than the front. Is it pads and not shoes? Mine is shoes, and need adjusting and cleaning. Helps the fronts wear less.

97 Blazer, Bought in 2002, Same with the headlights, and most of the light bulbs. Don't recall replacing any of them. Daytime running lights are high beams at low power.

So far no trouble with power windows.

Unfortunately just about every thing else has been worked on if not replaced at some point.

 

I probably wouldn't say what was the most reliable (if I could think of anything) just because it would probably jinx it...

 

lol. yeah the rear caliper pins are probably frozen, since most your braking power is in the front you probably dont even notice. my first car was a 81 toyota corolla. it was a beat turd when i got it back in lik e 96. drove it for 2 years never had one problem with it and alls i did was beat the heck out of it. had to scrap it due to extreme rust. the rear trunk floor started to give bringing the axle with it lol