Mine turns on while parked and wont turn off till I start it. Its a problem with the BCM. Body control module.
I was told it could be bad fuel pump.
You are missing fuel or spark.
if it is cranking but wont start check for spark, fuel, air and compression.
2007 ford freestar
Out of gas?
1998 chevy blazer wont start good spark and good fuel presure
Something is wrong with your 2000 Chevy Venture. Better information get's better answers.
does it start without the choke? if it does you are probably flooding the engine with the choke readjust it
Its probably your timing chain or belt
my Chevy s-10 wont start i think its the fuel pump
Probably a bad fuel pump, not uncommon.