Where are the crankshaft sensors on a 2001 cadillac deville sedan?

The crankshaft position (CKP) sensor is a three wire sensor based on the magneto resistive principle. A magneto resistive sensor uses two magnetic pickups between a permanent magnet. As an element such as a reluctor wheel passes the magnets the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. This system uses two sensors within the same housing for the V6 engine, and two separate sensors for the V8 engine. The PCM supplies each sensor a 12-volt reference, low reference, and a signal circuit. The signal circuit returns a digital ON/OFF pulse 24 times per crankshaft revolution.
Removal & Installation

1. Raise and support the vehicle.
   
2. Remove the air deflector.
   
3. Remove the oil filter adaptor.
   
4. Disconnect the crankshaft position sensor electrical connector.
   
5. Remove the crankshaft sensor retaining bolt.
   
6. Remove the crankshaft sensor.

1. Lubricate the crankshaft sensor O-ring with clean engine oil.
   NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
   
2. Install the crankshaft sensor and the retaining bolt. Tighten the retaining bolt between 10 Nm (89 inch lbs.).
   
3. Connect the crankshaft position sensor electrical connector.
   
4. Install the oil filter adaptor.
   
5. Install the air deflector.
   
6. Lower the vehicle.
   
7. Operate the engine and inspect crankshaft sensor for engine oil leaks.
   
8. Perform the CKP System Variation Learn Procedure.