2000 blazer Not sure what happened drove it home from work 20 mins later went to start it just completly died no click or nothing. waited a few mins went to try again, it chug a lugged a lil then died. now after a while i can turn the key lights and dash come on but no click just goes black when i push it to start position...any help is appreciated.

edit,k well i checked the battery connections and the red was loose i retighed it and was able to start the car i couldnt let her idle for a bit but then it ran...i need to be able to strap the battery in securly.