success!!! was able to borrow a puller from a mech at a GM dealership and we were able to get the crank pulley off in order to remove the crank sensor. replaced the old sensor with a brand new Delco sensor and put all the nuts and bolts back on. long story short car runs perfectly now!
... have noticed one small thing tho. when standing still at a traffic light my RPM'* usually flutter around 700-800 once the car is fully warmed up. shouldn't it be at 1,000? is there a way to correct this or am i just worrying about nothing?