LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1018 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement - Upper >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the fuel pipes/hoses. Refer to Fuel Hose/Pipes Replacement - Engine Compartment in Engine Controls - 4.3L.
  2. Disconnect the cruise control cable from the throttle lever, if equipped.
  3. Remove the cruise control cable from the accelerator control cable bracket, if equipped.
    4. Fig 1: Removing Cruise Control Cable
    GM781993Courtesy of GENERAL MOTORS CORP.
  4. Remove the accelerator cable from the throttle body lever.
    5. Fig 2: Removing Accelerator Cable From Throttle Body Lever
    GM781992Courtesy of GENERAL MOTORS CORP.
  5. Remove the accelerator cable from the accelerator control cable bracket.
    6. Fig 3: View Of Accelerator Cable To Accelerator Control Cable Bracket
    GM781990Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the following electrical connectors:
    • The air conditioning (A/C) compressor clutch (1), if equipped
    • The A/C pressure switch (4), if equipped
  7. Remove the engine wiring harness clip (3) from the accelerator control cable bracket.
    8. Fig 4: A/C Compressor Clutch, Engine Wiring Harness & A/C Pressure Switch
    GM782175Courtesy of GENERAL MOTORS CORP.
  8. Remove the accelerator control cable bracket nuts.
  9. Remove the accelerator control cable bracket with the cables attached, from the throttle body.
    10. Fig 5: View Of Accelerator Control Cable Bracket
    GM398030Courtesy of GENERAL MOTORS CORP.
  10. Reposition and secure the bracket and cables out of the way.
  11. Disconnect the following electrical connectors:
    • The throttle position (TP) sensor (1)
    • The idle air control (IAC) motor (2)
    • The control port injector module (3)
  12. Remove the engine wiring harness clip bolt (4).
    13. Fig 6: View Of TP Sensor, IAC Motor, ECT Sensor, Control Port Injector Module & Engine Harness Clip Bolt
    GM782174Courtesy of GENERAL MOTORS CORP.
  13. Disconnect the following electrical connectors:
    • The evaporative emission (EVAP) canister purge solenoid valve (1)
    • The manifold absolute pressure (MAP) sensor (2)
    14. Fig 7: EVAP Canister Purge Solenoid Valve & MAP Sensor
    GM782178Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the EVAP canister harness from the purge solenoid valve.
    15. Fig 8: Disconnecting EVAP Canister Harness
    GM869711Courtesy of GENERAL MOTORS CORP.
  15. Remove the engine wiring harness bracket nuts.
  16. Remove the engine wiring harness bracket.
    17. Fig 9: Removing Engine Wiring Harness Bracket & Nuts
    GM310241Courtesy of GENERAL MOTORS CORP.
  17. Remove the engine wiring harness ground nut and ground wire (4) from the rear of the right cylinder head.
    18. Fig 10: Ignition Coil, Ignition Coil Driver, Ground Nut/Cable & Generator Electrical Connectors
    GM782177Courtesy of GENERAL MOTORS CORP.
  18. Remove the engine wiring harness rear bracket nut at the EVAP canister purge solenoid valve.
  19. Remove the stud holding the engine wiring harness bracket.
    20. Fig 11: Removing Engine Wiring Harness Rear Bracket Nut & Stud Holding Engine Wiring Harness Bracket
    GM782176Courtesy of GENERAL MOTORS CORP.
  20. Reposition the engine wiring harness with the bracket aside.
  21. Remove the PCV valve hose from the valve and rocker cover.
    22. Fig 12: Removing PCV Valve Hose From Valve & Rocker Cover
    GM869710Courtesy of GENERAL MOTORS CORP.
  22. Disconnect the power brake booster vacuum hose from the vacuum fitting.
    23. Fig 13: Disconnecting Power Brake Booster Vacuum Hose
    GM869713Courtesy of GENERAL MOTORS CORP.
  23. Remove the accelerator cable bracket nuts.
  24. Remove the accelerator cable bracket.
    25. Fig 14: Removing Accelerator Cable Bracket & Nuts
    GM782205Courtesy of GENERAL MOTORS CORP.
  25. Remove the intake manifold - upper studs.
  26. Remove the front two throttle body studs.
  27. Remove the intake manifold - upper.
    28. Fig 15: Removing Upper Intake Manifold
    GM516794Courtesy of GENERAL MOTORS CORP.
  28. Remove and discard the intake manifold - upper gasket.
    29. Fig 16: Removing Intake Manifold Upper Gasket
    GM516790Courtesy of GENERAL MOTORS CORP.
  29. Remove and discard the O-ring seal from the fuel meter body.
    30. Fig 17: Removing Fuel Meter Body O-Ring Seal
    GM516773Courtesy of GENERAL MOTORS CORP.
  30. If required, remove the power brake booster vacuum fitting.
    31. Fig 18: Removing Power Brake Booster Vacuum Fitting
    GM516797Courtesy of GENERAL MOTORS CORP.
  31. Remove and discard the O-ring seal.
  32. If required, remove the PCV valve cover.
    33. Fig 19: Removing PCV Valve Cover
    GM869707Courtesy of GENERAL MOTORS CORP.
  33. Remove and discard the O-ring seal.
  34. If required, remove the rear throttle body stud.
  35. Remove the throttle body.
    36. Fig 20: View Of Throttle Body & Gasket
    GM12853Courtesy of GENERAL MOTORS CORP.
  36. Remove and discard the throttle body gasket.
  37. If required, remove the MAP sensor.
    38. Fig 21: Removing MAP Sensor
    GM480562Courtesy of GENERAL MOTORS CORP.
  38. Remove and discard the MAP sensor seal.
  39. If required, remove the EVAP canister purge solenoid valve studs.
  40. Remove the purge solenoid valve.
    41. Fig 22: Removing EVAP Canister Purge Solenoid Valve
    GM334511Courtesy of GENERAL MOTORS CORP.
  41. Clean and inspect the intake manifold - upper, if necessary. Refer to Intake Manifold Cleaning and Inspection .
scientia non olet · About LEMON Manuals