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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 3.5L - Repair Instructions - On Vehicle) >> Engine Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Oil Pressure Sensor Heat Shield & Nut
    GM1609656Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LGD/LZE) .
  2. Remove the hood. Refer to Hood Replacement .
  3. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  4. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  5. Remove the engine mount struts. Refer to Engine Mount Strut Replacement .
  6. Remove the drive belt. Refer to Drive Belt Replacement .
  7. Drain the cooling system. Refer to Cooling System Draining and Filling (LZE, LGD Static Fill) or Cooling System Draining and Filling (LZE, LGD GE47716 Fill) .
  8. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  9. Remove the oil pressure sensor heat shield nuts and shield.
    10. Fig 2: Identifying Electrical Connector
    GM1608498Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the oil pressure sensor electrical connector (1).
  11. Disconnect the knock sensor electrical connector (2).
  12. Disconnect the starter motor electrical connector (3).
  13. Disconnect the air conditioning (A/C) compressor electrical connector (4).
    14. Fig 3: Oil Level Sensor Electrical Connector
    GM1609295Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the oil level sensor electrical connector.
  15. Remove the engine harness clips from the transaxle brace and the oil pan.
  16. Lower the vehicle.
    17. Fig 4: View Of EVAP Canister Purge Solenoid Electrical Connector
    GM1608290Courtesy of GENERAL MOTORS CORP.
  17. Disconnect the evaporative emission (EVAP) canister purge solenoid electrical connector (1).
  18. Disconnect the electronic throttle control (ETC) electrical connector (2).
    19. Fig 5: View Of MAP Sensor Electrical Connector
    GM1608869Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).
  20. Reposition the generator terminal boot (2).
  21. Remove the generator terminal nut (5).
  22. Remove the generator terminal (4) from the stud.
  23. Disconnect the generator electrical connector (3).
  24. Disconnect the ignition coil electrical connector (6).
    25. Fig 6: Identifying Engine Harness Clip (2) & Strut Bracket
    GM1608276Courtesy of GENERAL MOTORS CORP.
  25. Disconnect the fuel injector inline (1) electrical connector.
  26. Remove the engine harness clips (2, 3) from the brackets.
    27. Fig 7: Camshaft Position Actuator Magnet Electrical Connector
    GM1611455Courtesy of GENERAL MOTORS CORP.
  27. Disconnect the camshaft phasor sensor electrical connector (2).
  28. Remove the engine harness clip bolt (3).
  29. Remove the engine harness clip (4) from the transaxle bracket.
    30. Fig 8: View Of HO2S Electrical Connector Clip (1) & Ignition Coil Bracket
    GM1609170Courtesy of GENERAL MOTORS CORP.
  30. Remove the connector position assurance (CPA) retainer (3).
  31. Disconnect the rear upper heated oxygen sensor (HO2S) electrical connector (2).
    32. Fig 9: Identifying Electrical Connector
    GM1612884Courtesy of GENERAL MOTORS CORP.
  32. Disconnect the knock sensor electrical connector (1).
  33. Disconnect the crankshaft position (CKP) sensor electrical connector (4).
  34. Remove the engine harness clips (2, 3) from the transaxle brace.
    35. Fig 10: View Of Engine Harness Ground Bolt
    GM1612887Courtesy of GENERAL MOTORS CORP.
  35. Remove the engine harness ground bolt (2).
  36. Remove the engine harness ground terminals (1) from the transmission.
  37. Remove the engine harness clip bolt (3) from the transmission.
  38. Reposition all branches of the engine harness out of the way.
  39. Remove the catalytic converter. Refer to Catalytic Converter Replacement (LGD/LZE) .
    40. Fig 11: View Of Engine Mount Lower Nuts
    GM1607922Courtesy of GENERAL MOTORS CORP.
  40. Remove the engine mount lower nuts.
    41. Fig 12: Locating Torque Converter Bolts
    GM1612979Courtesy of GENERAL MOTORS CORP.
  41. Remove the torque converter cover. Refer to Torque Converter Cover Replacement .
  42. Remove the starter motor. Refer to Starter Replacement (LGD/LZE) .
  43. Remove the torque converter bolts.
    44. Fig 13: View Of Air Conditioning (A/C) Compressor Front Bolt/Nut
    GM1608216Courtesy of GENERAL MOTORS CORP.
  44. Remove the A/C compressor front bolt and nut.
    45. Fig 14: A/C Compressor Rear Bolt
    GM1608220Courtesy of GENERAL MOTORS CORP.
  45. Remove the A/C compressor rear bolt and reposition the compressor off to the side. DO NOT discharge the A/C system.
    46. Fig 15: Locating Rear Transaxle Brace To Engine/Oil Pan Bolts
    GM1609665Courtesy of GENERAL MOTORS CORP.
  46. Remove the transaxle brace to transaxle bolts.
  47. Remove the transaxle brace to engine bolts.
  48. Remove the transaxle brace.
    49. Fig 16: View Of Transaxle-To-Engine Lower Rear Bolt
    GM1613156Courtesy of GENERAL MOTORS CORP.
  49. Remove the transaxle-to-engine lower rear bolt.
    50. Fig 17: Identifying Radiator Outlet Hose Clamp & Thermostat Housing
    GM1613134Courtesy of GENERAL MOTORS CORP.
  50. Reposition the radiator outlet hose clamp at the thermostat housing.
  51. Remove the radiator outlet hose from the thermostat housing.
  52. Lower the vehicle and support the transaxle.
    53. Fig 18: View Of Brake Booster Vacuum Hose & Intake Manifold
    GM1608820Courtesy of GENERAL MOTORS CORP.
  53. Remove the brake booster vacuum hose from the intake manifold.
    54. Fig 19: Coolant Inlet And Outlet Hoses/Pipes
    GM1608325Courtesy of GENERAL MOTORS CORP.
  54. Reposition the heater inlet and outlet hose clamps at the engine.
  55. Remove the heater inlet and outlet hoses from the engine pipes.
  56. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement (LGD/LZE) .
  57. Disconnect the fuel feed line from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  58. Disconnect the EVAP purge line from the canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service .
    59. Fig 20: View Of Radiator Inlet Hose & Crossover Pipe
    GM1613132Courtesy of GENERAL MOTORS CORP.
  59. Reposition the radiator inlet hose clamp at the engine.
  60. Remove the radiator inlet hose from the engine.
    61. Fig 21: Power Steering Pump & Bolts
    GM1613157Courtesy of GENERAL MOTORS CORP.
  61. Remove the power steering pump bolts and reposition. Refer to Power Steering Pump Replacement (LZ4/LZE/LZ9) .
  62. Install a engine lifting device to the engine.
    63. Fig 22: View Of Transaxle-To-Engine Bolts/Studs
    GM1612980Courtesy of GENERAL MOTORS CORP.
  63. Remove the transaxle-to-engine bolts/studs.
  64. Remove the engine from the vehicle.
  65. Remove the flywheel. Refer to Engine Flywheel Removal (Automatic Transmission) or Engine Flywheel Removal (Manual Transmission) .
  66. Install the engine to a engine stand.
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