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Home › Pontiac › 2004 › Bonneville GXP › Repair and Diagnosis › Engine Performance › System › Engine Controls (Introduction) -- 4.6L (LD8) › Repair Instructions › Throttle Body Assembly Replacement › Installation Procedure

Installation Procedure

NOTE: Do not use a cleaner which contains methyl ethyl ketone. This extremely strong solvent may damage components and is not necessary for this type of cleaning.

Use a carburetor cleaner in order to remove deposits.


Refer to the instructions provided with the cleaner.
NOTE: The outlet of the air cleaner assembly and the MAF sensor inlet duct must line up when completely installed. Misalignment may cause incorrect airflow readings resulting in MIL illumination or a driveability concern. An improperly installed inlet duct assembly or air cleaner assembly may cause misalignment.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
    IMPORTANT: Do not reuse the old throttle body gasket.
    Fig 1: Accelerator Controls Cable Bracket & Bolts
    GM573471Courtesy of GENERAL MOTORS CORP.
  1. Install the accelerator cable bracket (3) to the throttle body (1).

    Tighten:  Tighten the bolts to 12 N.m (106 lb in).

    2. Fig 2: Throttle Body & Water Crossover
    GM573468Courtesy of GENERAL MOTORS CORP.
  2. Position the new throttle body gasket on to the throttle body.
  3. Install bolts from the throttle body (3) to throttle body spacer (1) and finger tighten 2 lower bolts.

    Tighten:  Tighten all the bolts to 12 N.m (106 lb in).

    4. Fig 3: IAC and TP Sensor Connectors
    GM574138Courtesy of GENERAL MOTORS CORP.
  4. Install the IAC valve electrical connector (1) to the IAC valve (4).
  5. Install the TP sensor electrical connector (2) to the TP sensor (3).
    6. Fig 4: Accelerator Control Cable & Throttle Body Lever
    GM175378Courtesy of GENERAL MOTORS CORP.
  6. Install the accelerator control cable (3) at throttle body lever (2).
    7. Fig 5: Accelerator Controls Cable, Bracket & Cruise Control Cable
    GM104766Courtesy of GENERAL MOTORS CORP.
  7. Install the cruise control cable (2) at throttle body lever.
  8. Install the accelerator cable (3) to the accelerator controls cable bracket (1).
  9. Install the cruise control cable to accelerator controls cable bracket (1).
    10. Fig 6: Transaxle Shift Cable
    GM574958Courtesy of GENERAL MOTORS CORP.
  10. Install the transaxle shift cable (1) clip to the accelerator controls cable bracket.
    11. Fig 7: Fuel Feed, Return Lines & Retainer
    GM574905Courtesy of GENERAL MOTORS CORP.
  11. Install the fuel feed and return lines from the retainer (5) on to the accelerator controls cable bracket.
  12. Install the air cleaner intake duct clamp to the air cleaner intake air duct.

    Tighten:  Tighten the air cleaner intake duct clamps to 3 N.m (27 lb in).

    13. Fig 8: View Of PCV Valve Fresh Air Tube
    GM522644Courtesy of GENERAL MOTORS CORP.
  13. Install the PCV valve fresh air tube.
  14. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 4.6L.
  15. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  16. Perform the TP sensor learn procedure.
    1. Turn ignition switch to the RUN/ON position.
    2. Wait 1 minute.
    3. Turn ignition switch to the LOCK/OFF position.
    4. Wait 15 seconds.
  17. Perform the IAC valve learn procedure:
    1. Start and idle the engine for 15 seconds.
    2. Turn the ignition switch to the LOCK/OFF position.
    3. Wait 15 seconds
    4. Restart the engine and check for proper idle operation.
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