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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 >> Removal Procedure

Removal Procedure

  1. Partially drain 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.
    2. Fig 1: Identifying Air Intake Duct Hoses To Throttle Body
    GM785802Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the air intake duct hoses from the throttle body.
    3. Fig 2: Identifying Surge Tank Inlet & Throttle Body Heater Hoses, & Fuel Pressure Regulator Atmospheric Vent Tube
    GM785746Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the following from the throttle body:
    • The surge tank inlet hose
    • The throttle body heater hose
    • The fuel pressure regulator atmospheric vent tube
    4. Fig 3: View Of Throttle Body Electrical Connector To Throttle Body
    GM785851Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the throttle body electrical connector (2) from the throttle body (1).
    5. Fig 4: Locating Throttle Body Assembly Mounting Bolts
    GM345338Courtesy of GENERAL MOTORS CORP.
  5. Remove the throttle body assembly mounting bolts.
    6. Fig 5: Aligning Throttle Body Assembly To Intake Plenum
    GM345341Courtesy of GENERAL MOTORS CORP.
  6. Remove the throttle body assembly from the following:
    • The intake plenum
    • The vacuum fittings
    7. Fig 6: Locating Throttle Body O-Ring Seals
    GM658228Courtesy of GENERAL MOTORS CORP.
  7. Remove and discard the following:
    • The throttle body O-ring seals (1)
    • The vacuum fitting O-ring seals
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