1999 Pontiac Montana 99' Montana won't start.

Electrical problem
1999 Pontiac Montana 6 cyl Front Wheel Drive Automatic

Parked in the driveway about 6 months ago, was at the point where the battery would only hold a charge for 1 day, as long as you drove every day.

We sold the van and now it won't start, it is getting gas, but no spark I don't think. Why would it just loose spark just from sitting.

If I check at the valve at the intake, it gets gas and if it was gas, would fire at least.
Checked and no spark, I think the passlock disables the coil? Could the battery being dead for soo long screw up the passlock?

I used a scanner and comes up with nothing. All fuses and relays are good.
Does anybody know how to reset passlock on this 99 montana. My 2000 Grand Am just needed to do the "ON" for 10 minute intervals, 3 times, does not work.

Any help would be appreciated. Thank you!