i am in need of help, i have an 05 blazer with 80,000 kms. I have two issues, the first issue is that when i am driving my security light comes on followed by abs and parking brake light and seat belt light even though i am wearing my seat belt, then all the lights come on, gauges all go to zero then goes to normal. It will keep doing this over and over, i had the ignition switch replaced and it still doing it, any ideas of what it could be?

my other issue is that when i turn my 4x4 high on the light comes on and you hear the electrical stuff engage but only two tires spin, any ideas?

Any help would be greatly appreciated.
thank you all.