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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1220 (Engine Mechanical - 3.1L (On-Vehicle)) >> Repair Instructions >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Remove the coolant recovery reservoir. Refer to COOLANT RECOVERY RESERVOIR REPLACEMENT .
  5. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
    Fig 1: Drive Belt Shield
    G01702684Courtesy of GENERAL MOTORS CORP.
  6. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  7. Remove the power steering pump with lines. Move the power steering pump aside. Refer to POWER STEERING PUMP REPLACEMENT (3.8L) or POWER STEERING PUMP REPLACEMENT (3.1 L) .
  8. Remove the thermostat bypass pipe from the engine front cover. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT .
  9. Remove the radiator outlet hose from the coolant pump. Refer to RADIATOR HOSE REPLACEMENT - OUTLET (3.1 L) or RADIATOR HOSE REPLACEMENT - OUTLET (3.8L) .
  10. Remove the drive belt shield bolt and the shield.
  11. Remove the water pump pulley bolts.
  12. Remove the water pump pulley.
  13. Remove the lower crankshaft position sensor wiring harness bracket from the engine front cover.
    Fig 2: Lower Crankshaft Position Sensor Wiring Harness Bracket
    G01702685Courtesy of GENERAL MOTORS CORP.
  14. Remove the engine front cover bolts (1,2,3).
  15. Remove the engine front cover.
    Fig 3: Engine Front Cover Bolts
    G01702686Courtesy of GENERAL MOTORS CORP.
  16. Remove the engine front cover gasket.
  17. Clean the engine front cover and engine block gasket mating surfaces.
  18. Inspect the engine front cover for damage to the engine front cover, crankshaft front oil seal or the gasket mating surface.
    Fig 4: Engine Front Cover Gasket
    G01702687Courtesy of GENERAL MOTORS CORP.
  19. If replacing the engine front cover, remove the crankshaft position sensor from the engine front cover. Refer to CRANKSHAFT POSITION SENSOR .
  20. If replacing the engine front cover, remove the water pump from the engine front cover. Refer to WATER PUMP REPLACEMENT (3.1 L) or WATER PUMP REPLACEMENT (3.8L) .
    Fig 5: CKP Sensor
    G01702688Courtesy of GENERAL MOTORS CORP.
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