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Home >> Buick >> 2005 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Throttle Body Assembly
    GM12688Courtesy of GENERAL MOTORS CORP.
  1. Install a new gasket, if necessary.
  2. Install the throttle body assembly.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the throttle body nuts and the bolts.

    Tighten:  Tighten the nuts and the bolts to 28 N.m (21 lb ft).

    4. Fig 2: View Of Throttle Body Hoses, Heater Outlet Hose & Thermostat Bypass Pipe
    GM622761Courtesy of GENERAL MOTORS CORP.
  4. Install the throttle body inlet (3) and the outlet (4) hoses to the throttle body.
    5. Fig 3: Locating Heater Pipe Nut
    GM54419Courtesy of GENERAL MOTORS CORP.
  5. Install the heater pipe nut to the throttle body.

    Tighten:  Tighten the nut to 25 N.m (18 lb ft).

    6. Fig 4: View Of IAC Valve Electrical Connector
    GM69056Courtesy of GENERAL MOTORS CORP.
  6. Connect the IAC valve electrical connector.
    7. Fig 5: View Of TP Sensor & Electrical Connector
    GM69065Courtesy of GENERAL MOTORS CORP.
  7. Connect the TP sensor electrical connector.
  8. Install the accelerator controls cable bracket. Refer to Accelerator Controls Cable Bracket Replacement .
  9. Install the air cleaner intake duct. Refer to Air Cleaner Intake Duct Replacement .
  10. Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
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