[AJxtcman]

That is the way GM says to do it. Now this is my way.

Raise the car on the hoist
Remove the Front Air Deflector
Remove the bolt retaining the brake line bracket to the front of the cradle
Remove the front engine mount lower bolt.
Remove both of the front cradle bolts.
Un-clip the harness from the oil filter housing
Reach up to and un-clip the reddish connector locks on each connector. I use a hook shaped pick tool.
Un-clip both connectors from the crank sensors and move them to the side.
Use a 1/4 drive 10mm flex socket and a long extension and remove the retaining bolts.
Pull out both sensors.
Slide in the new crank sensors.
Bolt them in place
Reconnect the connectors and install the locks.
Re-clip the harness in place
Reinstall the cradle bolts and the motor mount nut.
Reinstall the brake line retainer bolt
Reinstall the front air deflector
Allow the engine to warm up to operating temp.
Relearn Crank Variance