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
- Remove the wiring harness connector from the knock sensor.
- Remove the knock sensor from the engine block.
- Install the knock sensor into the engine block.
- 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.