What is the problem of my vehicle?I driving home this noon and in the intersection, I stopped and press the brake. and while im waiting on our turn lane, i felt that my vehicle start backing up even i pressing the brake. it happened twice, i just quick put the gear in park and turn off my vehicle and turn on again before our lane turn

SOURCE: 2005 chevy silverado 1500, service 4 wheel drive, gears

Sounds like a bent fork in the transfer case. It is a common problem with your truck. The transfer case is a np236. If it just recently started doing this, the rebuild will cost around $800. If the 4wd has been acting up for a while, the planetary will probably need changed, which is another $200.

SOURCE: 84 Eldorado squeaks when driving and stops when i press thebrakes

its time for new brakes..read your owners manual...brakes will tell you they need replacing with squeeks or chirps and these go away when you press the pedal.

SOURCE: Same thing happened to me!

your crankshaft positon sensor is defective. Replace it and the epc will never come back and no more dying out. this happened to me several times and it would just come and go. i replaced it and now the car starts right away and the epc light hasnt returned since

SOURCE: engine or transmission knock / rattle upon

I had the same problem on my 2006 Lucerne and it was the engine mount located on the front of the vehicle behind the radiator.

SOURCE: The gear shift on my 1998 Lincoln Navigator is

It can be either the shift cable or the Automatic parking brake release.
With your vehicle stalling it sounds like the parking brake release is leaking vacuum and causing stalling.

You can check with Autozone or Oreillys to see if there is an aftermarket part for that. Then locate the Auot release on your vehicle and when you take it off, slide the parts within the fixture to verify sticking.