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HOMESERVICE MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - 5.3L - INTRODUCTION (2 OF 2)REPAIR INSTRUCTIONSTHROTTLE BODY ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE
2006 Isuzu Ascender S, 5.3 M, 4WD

Installation Procedure

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Installation Procedure
    Fig 1: Throttle Body Assembly
    GM1401966Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW throttle body gasket (509).
  2. Install the throttle body (508).
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the throttle body bolts (538) and nuts (507).

    Tighten:  Tighten the bolts/nuts to 6 N.m (53 lb in).

    4. Fig 2: View Of Auxiliary Heater Inlet & Outlet Hoses/Pipes
    GM901492Courtesy of GENERAL MOTORS CORP.
  4. Connect the 2 throttle body engine coolant hoses to the throttle body.
  5. Position the throttle body hose clamps.
    6. Fig 3: Throttle Actuator Motor Connector & Throttle Actuator Motor
    GM1522415Courtesy of GENERAL MOTORS CORP.
  6. Connect the throttle actuator motor electrical connector (1) to the throttle actuator motor (2).
    7. Fig 4: View Of Intake Air Tube
    GM898123Courtesy of GENERAL MOTORS CORP.
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  8. Refill the cooling system. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LH6, LS2) in Engine Cooling.
  9. 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.
  10. Connect a scan tool in order to test for a 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. Start the engine.
  13. Inspect for coolant leaks.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.