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Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 3.2L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. If necessary, assemble the intake manifold. Refer to Intake Manifold Assemble .
  2. Remove the masking from the intake manifold flange and ensure the sealing surfaces are clean and dry.
  3. Fig 1: Intake Manifold, Bolts & Seals
    GM217280Courtesy of GENERAL MOTORS CORP.
  4. Install the seals (3) into the intake manifold flange grooves.
  5. Position the intake manifold (2) to the intake manifold flange.
  6. NOTE: Refer to Fastener Notice in Cautions and Notices.
  7. Install the intake manifold bolts (1).

    Tighten:  Tighten the intake manifold bolts to 20 N.m (15 lb ft).

  8. Install the fuel rail if previously removed. Refer to Fuel Injectors and Fuel Rail Replacement in Engine Controls-2.6L and 3.2L.
  9. Connect the fuel pressure regulator vent tube to the fuel pressure regulator.
  10. Fig 2: Identifying Electrical Connectors
    GM785853Courtesy of GENERAL MOTORS CORP.
  11. Connect the fuel injector electrical harness connector (2) to the engine wiring harness connector (3).
  12. Fig 3: Locating Fuel Rail Quick Connect Fittings
    GM785815Courtesy of GENERAL MOTORS CORP.
  13. 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)
  14. Install the intake plenum. Refer to Intake Plenum Replacement .