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Home >> Cadillac >> 2004 >> CTS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 5.7L - Introduction >> Repair Instructions >> Ignition Coil(s) Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of Battery Area Mounts And Connectors
    GM772418Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable (2). Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
    3. IMPORTANT: The ignition coils can be removed individually or as an assembly, depending on the repair being performed.
  3. If replacing an individual coil, disconnect the wire harness at the coil. If removing the coil assembly, disconnect the main coil harness connector.
  4. Disconnect the spark plug wire at the ignition coils.
  5. If replacing an individual coil, remove the ignition coil mounting bolts and/or nut that retains the coil to the coil bracket.
  6. If removing the coil assembly, remove the bolts securing the coil bracket to the valve rocker arm cover.
    7. Fig 2: Removing Ignition Coil Or Coil Assembly
    GM309721Courtesy of GENERAL MOTORS CORP.
  7. Remove the ignition coil or coil assembly.
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