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Home >> GMC >> 1998 >> Forward Control 7.4 J >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls - Remove/Install/Overhaul - 5.7L) >> Ignition System >> Knock Sensor (KS) Module >> Removal & Installation
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Removal & Installation

WARNING: This page is about a different variant/trim than selected.
  1. KS module is located in PCM. Disconnect negative battery cable. Remove PCM from vehicle. See POWERTRAIN CONTROL MODULE (PCM)  under COMPUTERIZED ENGINE CONTROLS. Position PCM with access cover up. Remove access cover from PCM.
  2. Using thumb and forefinger, squeeze both ends of knock sensor module inward and pull module up from access hole. To install, reverse removal procedure. Ensure module latches into holder in PCM.