[big white bufflo]

remove pass tire ,remove the flaps to gain access to harmonic balancer,remove harmonic balancer useing a three jaw puller you can rent one from autozone or murrys , the sensor is on the front of motor . the tricky part is realining the new sensor gm has a tool for it but i just slightly tighten the screws just so you can bump it around slide balancer in place till the slip ring gets between the sensor make sure you have a gap on both side of ring remove balancer then tighten it up totaly put back together the part should cost about 75 $