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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 418 (Engine Mechanical - 4.2L 6-Cylinder (On-Vehicle)) >> Repair Instructions >> Camshaft Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Discharge the A/C. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
  3. Remove the A/C line at the oil level indicator tube bracket nut.
    4. Fig 1: Removing A/C Line At Oil Level Indicator Tube Bracket Nut
    G01706245Courtesy of GENERAL MOTORS CORP.
  4. Remove the A/C line from the accumulator.
  5. Remove the A/C bracket bolt from the engine lift hook.
    6. Fig 2: Removing A/C Bracket Bolt From Engine Lift Hook
    G01706246Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine lift bracket.
    7. Fig 3: Removing Engine Lift Bracket
    G01706247Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the ignition control module electrical connectors.
  8. Loosen and remove the ignition control module bolts.
  9. Remove the ignition control module.
    10. Fig 4: Removing Ignition Control Module
    G01706248Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the engine electrical harness housing from the camshaft cover (1) taking care not to damage the clips that hold the housing in place.
    11. Fig 5: Disconnecting Engine Electrical Harness Housing From Camshaft Cover
    G01706249Courtesy of GENERAL MOTORS CORP.
  11. Disconnect the fuel injection harness electrical connector.
  12. Loosen and remove the camshaft cover bolts.
    13. Fig 6: Removing Camshaft Cover Bolts
    G01706250Courtesy of GENERAL MOTORS CORP.
  13. Remove the camshaft cover.
    14. Fig 7: Removing camshaft cover
    G01706251Courtesy of GENERAL MOTORS CORP.
  14. Clean and inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection in Engine Mechanical -4.2 L Unit Repair.
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