2011 Cadillac CTS V, 2D Coupe, StandardFACTORY OEM SERVICE PROCEDURE

Removal Procedure

    Fig 1: Knock Sensor, Starter Assembly, Engine Electrical Connector & Engine Block - Right Side
    GM1480896Courtesy of GENERAL MOTORS CORP.
  1. Remove the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side (LLT) or Exhaust Manifold Replacement - Right Side (LSA) .
  2. Remove the right catalytic convertor. Refer to Catalytic Converter Replacement - Right Side (LF1) or Catalytic Converter Replacement - Right Side (LLT) or Catalytic Converter Replacement - Right Side (LSA) .
    3. NOTE: In the following service procedure, it maybe necessary to remove the starter assembly to gain enough clearance to remove the knock sensor.
  3. Remove the starter assembly (4), ONLY IF NEEDED. Refer to Starter Replacement (LF1/LLT) or Starter Replacement (LSA) .
  4. Remove the knock sensor mounting (1).
  5. Remove the knock sensor (2) from the engine block (5).
  6. Disconnect the engine electrical connector (3) from the knock sensor (2).
  7. Remove the knock sensor (2).
Factory Service Tools

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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.

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