Won't shut off???

I have a Blazer S-10 with a bad problem. It starts up fine but when I turn the key off it doesnt shut off.

Why are all the lights in the dash always on like the "SERVICE ENGINE SOON", "FUEL", AND "OIL PRESSURE"? They all stay on even when the key is off.
Has anybody ever heard of these problems???
How do I fix those problems???

I guess chevys are junk because nobody knows anything about the problems im having with it

Should I just junk it or try to fix the problems

theres a problem with your ingnition switch sticking or it's misadjusted or theres a problem with the switch linkage. the switch is under the dash on the steering column