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Home >> Chevrolet >> 1998 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.3L V6, 5.0L, 5.7L & 7.4L V8 - VINS [W,X,M,R,J]) >> Removal & Installation >> Intake Manifold (Lower) >> Intake Manifold (Lower) Removal (4.3L, 5.0L & 5.7L)

Intake Manifold (Lower) Removal (4.3L, 5.0L & 5.7L)

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the battery negative cable.
  2. Drain the engine coolant.
    Fig 1: Air Cleaner Assembly Removal
    G00563576Courtesy of GENERAL MOTORS CORP.
  3. Remove the air cleaner assembly.
  4. Remove the following coolant hoses:
    • Upper radiator hose.
    • Both heater hoses.
    • Coolant by-pass hose.
  5. Disconnect all electrical connectors.
  6. Remove the distributor.
  7. Use a twisting motion to remove the vacuum brake booster hose, if equipped.
  8. Disconnect the throttle cable and the cruise control cable, if equipped.
  9. Remove the drive belt.
    Fig 2: A/C Compressor Removal
    G00563577Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: It is not necessary to discharge the A/C refrigerant.
  10. Remove the air conditioning (A/C) compressor, if equipped, and set it aside.
    Fig 3: Exhaust Gas Recirculation (EGR) Removal/Installation
    G00563578Courtesy of GENERAL MOTORS CORP.
  11. Disconnect the exhaust gas recirculation (EGR) pipe from the bracket and the front of the intake manifold.
  12. Remove the PCV valve.
  13. Disconnect the fuel pipes from the rear of the intake manifold.
  14. Disconnect the electrical connector from the power steering pump.
    Fig 4: Power Steering Pump Mounting Bracket Removal/Installation
    G00563579Courtesy of GENERAL MOTORS CORP.
  15. Remove the power steering pump mounting bracket using the following procedure:
    • Remove the power steering pump pulley.
    • Remove the nut, then the bolts.
    • Remove two nuts from the back of the power steering pump.
    • Slide the power steering pump mounting bracket forward, with the power steering pump still attached.
  16. Disconnect the wiring bracket from the rear of the right cylinder head.
  17. Remove one valve rocker arm cover.
    Fig 5: Intake Manifold Bolts Removal/Installation
    G00563580Courtesy of GENERAL MOTORS CORP.
  18. Remove the intake manifold bolts.
  19. Remove the intake manifold.
  20. Clean all surfaces.
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