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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Engine Mechanical - 4.3L) >> Repair Instructions - On Vehicle >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Protection Shield
    GM349061Courtesy of GENERAL MOTORS CORP.
  1. Remove the water pump. Refer to Water Pump Replacement (LU3) .
  2. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  3. Remove the oil pan. Refer to Oil Pan Replacement .
  4. Remove the engine shield bolts and shield.
    5. Fig 2: Crankshaft Position (CKP) Sensor Electrical Connector & Clip
    GM1877521Courtesy of GENERAL MOTORS CORP.
  5. Remove engine wire harness clip (1) from front cover.
  6. Disconnect the crankshaft position (CKP) sensor electrical connector (2).
    7. Fig 3: CKP Sensor Bolt And Sensor
    GM1877536Courtesy of GENERAL MOTORS CORP.
  7. Remove the CKP sensor bolt and sensor.
    8. Fig 4: CKP Sensor O-Ring Seal
    GM1877540Courtesy of GENERAL MOTORS CORP.
  8. Remove and discard the CKP sensor O-ring seal.
    9. Fig 5: Camshaft Position (CMP) Sensor Wiring Harness Jumper
    GM1877593Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the engine wiring harness electrical connector from the camshaft position (CMP) sensor wiring harness jumper.
    10. Fig 6: View Of CMP Sensor & Bolt
    GM1877007Courtesy of GENERAL MOTORS CORP.
  10. Remove the CMP sensor bolt.
  11. Remove the CMP sensor and wiring harness jumper from the engine front cover.
  12. Disconnect the CMP sensor wiring harness jumper from the CMP sensor.
  13. Remove the CMP sensor from the wiring harness jumper.
    14. Fig 7: Front Cover And Bolts
    GM1877601Courtesy of GENERAL MOTORS CORP.
  14. Remove the front cover bolts.
    15. IMPORTANT: After the composite front cover is removed do not reinstall the front cover. Always install a NEW front cover.
  15. Remove and discard the front cover.
  16. Clean all sealing surfaces.
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