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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Engine Cooling System) >> Repair Instructions >> Throttle Body Heater Hose/Pipe Replacement - Inlet (LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Partially drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) , Draining and Filling Cooling System (LY7 Static Fill)  or Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) .
    2. Fig 1: Identifying Engine Wiring Harness & Remote Power Steering Fluid Reservoir
    GM785764Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the following from the remote power steering fluid reservoir (1):
    • The brake booster hose
    • The wiring harness (2)
    3. Fig 2: Locating Remote Power Steering Fluid Reservoir Mounting Bolts
    GM785730Courtesy of GENERAL MOTORS CORP.
  3. Remove the remote power steering fluid reservoir mounting bolts (1, 3) ONLY, and position aside.
  4. Remove the wiper motor module in order to gain access to the rear of the throttle body heater inlet hose. Refer to Wiper Motor, Wiper System Module Replacement in Wipers/Washer Systems.
    5. Fig 3: Identifying Heated Oxygen Sensor Connector & Throttle Body Heater Inlet Hose/Pipe
    GM785786Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the heated oxygen sensor connector (2) from the rear of the throttle body heater inlet hose/pipe (3).
  6. Disconnect the throttle body heater inlet hose from the water crossover, using 90 degrees needle-nose pliers.
    7. Fig 4: Identifying Coil Pack Electrical Connector
    GM785821Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the electrical connector (2) from the coil pack (1).
    8. Fig 5: Identifying Throttle Body Heater Inlet Hose/Pipe-To-Intake Plenum Bolt
    GM785825Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the following from the front of the throttle body heater inlet hose/pipe:
    • The camshaft position (CMP) sensor connector
    • The left knock sensor connector
    • The vacuum pipe retainer
  9. Disconnect the vacuum brake booster hose (3) from the vacuum source.
  10. Remove the bolts securing the throttle body heater inlet hose/pipe to the following:
    • The intake plenum (2)
    • The engine rear lift bracket
  11. Disconnect the throttle body heater inlet hose from the throttle body.
    12. Fig 6: View Of Throttle Body Heater Inlet Hose/Pipe
    GM802788Courtesy of GENERAL MOTORS CORP.
  12. Remove the throttle body heater inlet hose/pipe from the engine.
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