I strtd my 2003 Chevy Venture to warm up b4 I.

I strtd my 2003 chevy venture to warm up b4 I pickd up kids, I came out and it was overheating ! Drove short distance to kids the engine lite came blinking off and on when I got ta kids I turnd van off 4 min and threw snow on engine to help cool it dwn ta get home. I got home and let it cool then put cooliant in it. Went a block while tha van kept cutting out similar ta carborator problems. Turnd van off at station and wheni went ta strt it. It was dead like tha battery was dead, I put it in neutral and it strtd. I checkd oil and there was a residue on cap that resymboled peanut butter. Can u lead me inrite direction wat I can do on no income