Replaced battery securty light came on power no start

A common cause of a constant draw on the battery when switched off is the satnav system searching for satelite communication because the BCM has not powered it off correctly.

Chances are you have a bad solder joint on the little board. If youre handy you can fix it but if not then it needs to be replaced.

Do you have a small wire connected with your neg. battery post This wire is a ground that grounds your car . , May have come lose when replaced battery. Not all cars have these i really don't know for sure on yours but is sure the place i would start. May even try hooking up a wire from battery " the black cable" And hold it to the car's frame to check good luck on this sorry not be more help.

look under bonnet and check that teh thin small wire is connected to the starter motor and hasnt dropped off

check linkage on top of transmission and make sure it moves while engaging shift lever. You may have also left a light on while doing work on van, check all interior lights that may still be on.

Probably a bad starter activator find it and tap on it sometimes it will kick the starter, but it means the starter will have to be replaced.

pump gas pedal three times once you have turn the key to on position before starting.

sometimes water can collect or condense inside the distributor cap and prevent starting. It's happened to me more than once. If it won't even turn over you may have hydro-locked the engine by sucking water through the intake but you didn't mention that important tidbit I'm guessing it does turn.

unplug fuel pump harness at pump and use a test light and see if turns on when someone starting van. If it does then plug it back in. and try hitting the tank where the pump is while someone is starting it. If it starts replace the pump. If no light comes on then test the fuel pump relay.

2000 chevy venture run good but my lights flickers and have to jump. After I jump the van and put my meeter on the battery its reading 14.volts at idle. I can drive around to store cut the van off come out it starts fine leave it overnite and it don't started.