General Motors 8.1 — Crankshaft Position (CKP) Sensor Replacement

Repair & overhaul · CKP sensor

For the General Motors 8.1, from the General Motors service manual.

Applies to: General Motors 8.1L engine

Procedure

1. Disconnect the CKP sensor harness connector at the CKP sensor.
2. Remove the CKP sensor retaining bolt.
3. Remove the CKP sensor.
4. Inspect the CKP sensor O-ring and replace if worn or damaged.
5. Lubricate the new O-ring with clean engine oil.
6. Install the CKP sensor.
7. Install the CKP sensor retaining bolt.
8. Connect the CKP sensor harness connector.

Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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