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Home › Cadillac › 2004 › CTS Base, 3.2 N › Repair and Diagnosis › Engine Performance › System › Engine Controls - 2.6L & 3.2L - Introduction › Repair Instructions › Throttle Body Assembly Replacement › Installation Procedure

Installation Procedure

    Fig 1: Locating Throttle Body O-Ring Seals
    GM658228Courtesy of GENERAL MOTORS CORP.
  1. Position the throttle body O-ring seals (1) to the grooves in the throttle body.
  2. Lightly lubricate the vacuum fitting O-rings with clean engine oil.
  3. Install the vacuum fitting O-rings to the vacuum fittings.
    4. Fig 2: Aligning Throttle Body Assembly To Intake Plenum
    GM345341Courtesy of GENERAL MOTORS CORP.
  4. Simultaneously position the throttle body assembly to the following:
    • The intake plenum
    • The vacuum fittings
    5. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 3: Identifying Throttle Body Assembly Mounting Bolts
    GM345338Courtesy of GENERAL MOTORS CORP.
  5. Install the throttle body assembly mounting bolts.

    Tighten:  Tighten the throttle body assembly mounting bolts to 8 N.m (71 lb in).

    6. Fig 4: View Of Throttle Body Electrical Connector To Throttle Body
    GM785851Courtesy of GENERAL MOTORS CORP.
  6. Connect the throttle body electrical connector (2) to the throttle body (1).
    7. Fig 5: Identifying Surge Tank Inlet & Throttle Body Heater Hoses, & Fuel Pressure Regulator Atmospheric Vent Tube
    GM785746Courtesy of GENERAL MOTORS CORP.
  7. Connect the following to the throttle body:
    • The surge tank inlet hose
    • The throttle body heater hose
    • The fuel pressure regulator atmospheric vent tube
    8. Fig 6: Identifying Air Intake Duct Hoses To Throttle Body
    GM785802Courtesy of GENERAL MOTORS CORP.
  8. Connect the air intake duct hoses to the throttle body.
  9. Perform the idle learn procedure. Refer to Idle Learn Procedure .
  10. Fill the cooling system. Refer to Draining and Filling Cooling System (LA3, LY9) or Draining and Filling Cooling System (LY7) or Draining and Filling Cooling System (LS6) in Engine Cooling.
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