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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 48 (ENGINE CONTROLS - REMOVAL, INSTALLATION & OVERHAUL - 7.4L)IGNITION SYSTEMKNOCK SENSOR (KS) MODULEREMOVAL & INSTALLATION
1998 Chevrolet Suburban K2500, 7.4 J, Part Time

Removal & Installation

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Removal & Installation
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1998 GMC Savana Special, 1998 GMC Savana Camper Special, 1998 GMC Savana, 1998 Chevrolet RV Cutaway, and 1998 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  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.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.