Installation Procedure

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Installation Procedure
WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Knock Sensor, Engine Harness & Engine Block - Left Side
    GM1480894Courtesy of GENERAL MOTORS CORP.
  1. Reconnect the engine harness (3) and the knock sensor (2) electrical connectors.
  2. Position the knock sensor 2 on the engine block (4).
  3. Install the mounting bolt (1) for the knock sensor 2.
  4. CAUTION: Refer to Fastener Caution .
  5. Tighten the knock sensor mounting bolt (1) to 20 N.m (15 lb ft).
RENDER: 1.0x

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When to See a Mechanic

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

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