This procedure covers the removal and replacement of the crankshaft position sensor on a 2014-2018 Chevrolet Silverado 1500 with the 5.3L V8 L83 engine.

Warnings

Tools required

Parts

• Crankshaft position sensor × 1 — ACDelco 213-4714 or equivalent
• Sensor O-ring seal × 1 — Usually included with sensor

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely for at least 30 minutes
3. Disconnect negative battery terminal to prevent accidental starter engagement
4. Raise and support the front of the vehicle on jack stands for better access (optional but recommended)
5. Remove the plastic engine shield/skid plate if equipped

Procedure

1. 1

   Locate the crankshaft position sensor
   Position yourself under the right (passenger) side of the engine. The crankshaft position sensor is mounted on the engine block near the starter motor, approximately at the 4 o'clock position when viewing the crankshaft pulley from the front. It has a single electrical connector and is held by one bolt.
2. 2

   Disconnect the electrical connector
   Locate the electrical connector on the crankshaft position sensor. Press the release tab on the connector and pull it straight off the sensor. If the connector is difficult to remove, use a pick tool to depress the locking tab while pulling gently. Do not pull on the wiring harness.
3. 3

   Remove the sensor mounting bolt
   Using a 10mm socket with extension, remove the single bolt securing the crankshaft position sensor to the engine block. Keep this bolt if the replacement sensor does not include a new one.
   Torque spec

   Crankshaft Position Sensor10 Nm (7 lb-ft)
4. 4

   Extract the sensor
   Carefully pull the crankshaft position sensor straight out of the engine block. It may require a slight twisting motion to break it free. The sensor has an O-ring seal that creates resistance. Do not pry against the sensor body or connector as this can damage the component.
5. 5

   Inspect the sensor bore
   Examine the sensor mounting hole in the engine block for debris, oil residue, or metal shavings. Clean the bore opening with a shop rag. If excessive metal debris is present, this may indicate engine internal issues that should be investigated.
6. 6

   Prepare the new sensor
   Remove the new crankshaft position sensor from its packaging. Verify that it includes a new O-ring seal installed on the sensor body. Lightly coat the O-ring with clean engine oil to ease installation and prevent tearing. Do not use grease or silicone lubricants.
7. 7

   Install the new sensor
   Carefully insert the new crankshaft position sensor into the engine block bore. Push it in until it seats fully against the block. The sensor should slide in smoothly without excessive force. Align the bolt hole in the sensor with the threaded hole in the block.
   ⚠Ensure the sensor is fully seated before installing the bolt. A partially seated sensor will cause starting and running issues.
8. 8

   Install and torque the sensor bolt
   Thread the sensor mounting bolt by hand first to ensure it is not cross-threaded. Once hand-tight, use a torque wrench to tighten the bolt to 10.0 Nm (7.0 lb-ft). Do not exceed this specification as the aluminum block threads can be damaged.
   Torque spec

   Crankshaft Position Sensor10 Nm (7 lb-ft)
9. 9

   Reconnect the electrical connector
   Push the electrical connector onto the crankshaft position sensor until you hear or feel a distinct click. Gently pull on the connector (not the wiring) to verify it is securely locked in place.
10. 10

    Reinstall underbody components
    If removed, reinstall the plastic engine shield or skid plate. Reconnect the negative battery terminal. Lower the vehicle if it was raised.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify the sensor mounting bolt is torqued to specification
3. Reinstall any protective shields or covers that were removed

Verification

• Turn the ignition to the ON position without starting the engine. Verify that the check engine light illuminates and then turns off, indicating proper sensor communication
• Start the engine and verify it starts normally without extended cranking or rough idle
• Allow the engine to idle for 2-3 minutes and verify smooth operation with no misfires or stalling
• Use an OBD-II scanner to verify no crankshaft position sensor codes are present (P0335, P0336, P0337, P0338, P0339)
• Test drive the vehicle and verify normal acceleration and no hesitation or stalling during operation

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