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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 >> Intake Air Resonator Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Locating Air Intake Duct Hose To MAF/IAT Sensor
    GM785797Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the air intake duct hose from the Mass Air Flow (MAF)/Intake Air Temperature (IAT) sensor.
    2. Fig 2: View Of Intake Air Resonator Retaining Bolt
    GM785804Courtesy of GENERAL MOTORS CORP.
  2. Remove the bolt securing the intake air resonator to the cooling fan assembly.
    3. Fig 3: Identifying Air Intake Duct Hoses To Throttle Body
    GM785802Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the air intake duct hoses from the throttle body.
    4. Fig 4: Identifying Intake Air Resonator Guide Pins
    GM785800Courtesy of GENERAL MOTORS CORP.
  4. Lift the intake air resonator from the front frame in order to access the electrical connector and vacuum hoses.
    5. Fig 5: View Of Intake Air Resonator In Engine Compartment
    GM785803Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the electrical connector from the intake resonance switchover solenoid.
    6. IMPORTANT: Note the routing of the vacuum hoses.
  6. Disconnect the vacuum hoses from the following components:
    • The coolant bypass solenoid
    • The intake plenum switchover solenoid
    • The vacuum brake booster hose
  7. Carefully position aside the following while removing the intake air resonator from the vehicle:
    • The surge tank inlet hose
    • The upper radiator hose
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