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General Motors 8.1 — Knock Sensor (KS) Replacement

Repair & overhaul

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

Applies to: General Motors 8.1L engine

Procedure

  1. Remove the wiring harness connector from the knock sensor.
  2. Remove the knock sensor from the engine block.
  3. Install the knock sensor into the engine block.
  4. Connect the knock sensor harness connector to the knock sensor.

Specs & values

  • Tighten the knock sensor to 19 N·m (14 lb ft).

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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