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Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls - 2.6L & 3.2L - Introduction) >> Repair Instructions >> Ignition Coil(s) Replacement - Bank 1 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Inspect the coil pack seals and spark plug boots for damage or wear.

    Replace as necessary.

    2. Fig 1: View Of Spark Plug Boots With Spark Plugs
    GM444014Courtesy of GENERAL MOTORS CORP.
  2. Align the spark plug boots with the spark plugs.
  3. Carefully press and seat the coil pack in place.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the coil pack retainer bolts.

    Tighten:  Tighten the coil pack retainer bolts to 8 N.m (71 lb in).

    5. Fig 2: Locating Coil Pack Electrical Connector
    GM785822Courtesy of GENERAL MOTORS CORP.
  5. Connect the electrical connector (2) to the coil pack (1).
    6. Fig 3: View Of Knock Sensor Pigtail, Knock Sensor Pigtail & Bracket
    GM785857Courtesy of GENERAL MOTORS CORP.
  6. Connect the electrical connector (2) to the right knock sensor pigtail (1).
    7. Fig 4: Identifying ECM Bracket Bolts
    GM785761Courtesy of GENERAL MOTORS CORP.
  7. Position the ECM and bracket to the engine.
  8. Install the ECM bracket bolts to the following:
    • The cylinder head
    • The intake plenum
  9. Tighten the ECM bracket bolts in the sequence shown.

    Tighten: 

    • Tighten the ECM bracket to cylinder head bolt to 20 N.m (15 lb ft).
    • Tighten the ECM bracket to intake plenum bolts to 8 N.m (71 lb in).

  10. Install the bolt securing the coolant inlet pipe to the ECM bracket.

    Tighten:  Tighten the coolant inlet pipe support bolt to 20 N.m (15 lb ft).

    11. Fig 5: View Of ECM Connectors & Wiring Harness Connectors
    GM785823Courtesy of GENERAL MOTORS CORP.
  11. Carefully align the harness connectors (2) with the ECM connectors.
  12. Guide the connectors (2) into place while moving the release levers to the locked position (1).
    13. Fig 6: Locating ECM Ground Wire Retaining Screw
    GM785849Courtesy of GENERAL MOTORS CORP.
  13. Install the screw (2) securing the ECM ground wire (1) to the ECM (3).

    Tighten:  Tighten the ECM ground wire screw to 4.5 N.m (40 lb in).

    14. Fig 7: Identifying Afterboil Coolant Pump Bolts
    GM785768Courtesy of GENERAL MOTORS CORP.
  14. Install the 2 bolts (3) securing the afterboil coolant pump to the ECM bracket.

    Tighten:  Tighten the afterboil coolant pump bolts to 10 N.m (89 lb in).

  15. Connect the 2 cable harness clips (1) securing the engine wiring harness (4) to the ECM bracket (2).
    16. Fig 8: View Of Chassis Hose/Pipes Retainer
    GM785815Courtesy of GENERAL MOTORS CORP.
  16. Insert the chassis hose/pipes into the retainer (4) located at the ECM bracket.
  17. Close the retainer (4).
  18. Connect the EVAP quick connect fitting (3). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  19. Refer to Quick Connect Fitting(s) Service (Metal Collar)  in order to connect the following quick connect fittings to the fuel rail.
    • The feed hose/pipe (2)
    • The return hose/pipe (1)
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