i just got a blazer really nice but mine has the two light how do u tell when its out of 4wd when u push the button they blink then none stay on ?

Punctuation, grammar, and sentence structure will help you in life.

If the 4WD light is on when the 4WD button is pushed, then it is engaging properly. If you push the 2WD button, & the 4WD light goes off, then it is disengaging properly.

well if i push it once both lights turn on at the same time and stay on

this will help you out http://www.s10planet.com/forum/showthread.php?t=9749

you should be able to fell the different between 2 wheel & 4 wheel drive when you're driving.