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Home >> Cadillac >> 2005 >> Escalade EXT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.8L, 5.3L & 6.0L - Introduction >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Throttle Body Gasket
    GM492774Courtesy of GENERAL MOTORS CORP.
  1. Install the NEW throttle body gasket (1).
    2. Fig 2: View Of Throttle Body & Nuts
    GM825837Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the throttle body.
  3. Install the throttle body nuts.

    Tighten:  Tighten the nuts to 10 N.m (89 lb in).

    4. Fig 3: Coolant Air Bleed Hose & Clamp
    GM1239286Courtesy of GENERAL MOTORS CORP.
  4. Install the coolant air bleed hose to the throttle body.
  5. Position the coolant air bleed hose clamp at the throttle body.
    6. Fig 4: View Of CPA Retainer, Harness Clips, ETC, Coil Harness & Fuel Injectors Electrical Connectors
    GM1235686Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Verify that the throttle actuator motor harness connector and the connector seal are properly installed and not damaged.
  6. Connect the throttle actuator motor electrical connector (2).
  7. Install the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)) in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
  8. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  9. Refill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  10. Connect a scan tool in order to test for proper throttle-opening and throttle-closing range.
  11. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle (WOT).
  12. Verify that the vehicle meets the following conditions:
    • The vehicle is not in a reduced engine power mode.
    • The ignition is ON.
    • The engine is OFF.
  13. Start the engine.
  14. Inspect for coolant leaks.
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