FixVault
Home › Chevrolet › 2017 › SS Standard Trans › Repair and Diagnosis › Engine Mechanical › Engine Mechanical - 6.2L (LS3) › Repair Instructions - On Vehicle › Engine Replacement › Installation Procedure

Installation Procedure

    Fig 1: Engine Lifting Hook, Cylinder Head & Retaining Bolts
    GM1943716Courtesy of GENERAL MOTORS COMPANY
  1. Position the J 41798  engine lift brackets (1) on the cylinder heads (3).
  2. Install the J 41798  engine lift brackets to cylinder head retaining bolts (2).

    Tighten 

    Tighten the bolts to 50 N.m (36 lb ft).

  3. Using a suitable lifting crane and the J 41798  engine lift brackets raise the engine slightly.
  4. Remove the engine from the engine stand.
  5. Lower the engine onto the front subframe.
  6. Position the engine mounts to the front subframe.
    7. Fig 2: Lower Engine Mount To Front Subframe Retaining Nut
    GM3445973Courtesy of GENERAL MOTORS COMPANY
  7. Install the lower engine mount to front subframe retaining nuts (1) on both engine mounts.

    Tighten 

    Tighten the nuts to 80 N.m (59 lb ft).

  8. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement .
  9. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory .
  10. Install the automatic transmission flex plate. Refer to Automatic Transmission Flex Plate Installation .
  11. Install the automatic transmission. Refer to Transmission Replacement .
  12. Connect a suitable lifting crane to the engine lift brackets and raise the suitable lifting crane to support the engine.
    13. Fig 3: Transmission Fluid Cooler Pipe Brace Bolt
    GM1951057Courtesy of GENERAL MOTORS COMPANY
  13. Position the automatic transmission cooler pipes (2) to the engine.
  14. Install the automatic transmission cooler pipe clamp to A/C bracket retaining bolt (1).

    Tighten 

    Tighten the bolt to 22 N.m (16 lb ft).

  15. Install the engine and transmission wiring harness and related components.
    16. NOTE:

    Make sure that all the hoses, wires, pipes and shock modules clear the vehicle during the installation process.

  16. With the aid of an assistant, raise the table and/or lower the vehicle to install the engine, transmission, front suspension and subframe assembly to the vehicle.
    17. Fig 4: Transmission Support To Body Retaining Bolts
    GM1958707Courtesy of GENERAL MOTORS COMPANY
  17. Install the transmission support to body retaining bolts (1).

    Tighten 

    Tighten the bolts to 58 N.m (43 lb ft).

    18. Fig 5: Subframe To Body Retaining Bolts
    GM1958712Courtesy of GENERAL MOTORS COMPANY
  18. Install the front subframe to body retaining bolt (1). Repeat for opposite side.

    Tighten 

    Tighten the bolts to 160 N.m (118 lb ft).

    19. Fig 6: Subframe To Body Front Retaining Bolts
    GM1958711Courtesy of GENERAL MOTORS COMPANY
  19. Install the front subframe to body front retaining bolt (1). Repeat for opposite side.

    Tighten 

    Tighten the bolts to 160 N.m (118 lb ft).

    20. Fig 7: Subframe To Body Rear Retaining Bolts
    GM1958709Courtesy of GENERAL MOTORS COMPANY
  20. Install the front subframe to body rear retaining bolts (1).

    Tighten 

    Tighten the bolts to 240 N.m (178 lb ft).

    21. Fig 8: Subframe Reinforcement Plate To Subframe Retaining Bolts
    GM1958714Courtesy of GENERAL MOTORS COMPANY
  21. Install the front subframe reinforcement plate (3) to the subframe (1).
  22. Install the front subframe reinforcement plate to front subframe retaining bolts (2).

    Tighten 

    Tighten the bolts to 17 N.m (13 lb ft).

  23. Lower the lift table and/or raise the vehicle to remove the support from the frame, engine and transmission.
  24. Remove the powertrain and/or engine lift table from the frame, engine and transmission.
  25. Lower the vehicle.
    26. Fig 9: Strut Assembly Retaining Nut
    GM1961827Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The strut assembly retaining nut (1) must be checked for correct torque before installing the strut assembly into the vehicle. The strut assembly retaining nut torque must be 75 N.m (55 lb ft).

  26. Check the torque of the strut assembly retaining nut (1), correct if necessary. Repeat for opposite side.

    Tighten 

    Tighten the nut to 75 N.m (55 lb ft).

    27. Fig 10: Front Strut Assembly To Front Wheelhouse Retaining Nut
    GM1961826Courtesy of GENERAL MOTORS COMPANY
  27. Install the front strut assembly (3) to the front wheelhouse (4). Repeat for opposite side.
  28. Install front strut assembly to front wheelhouse retaining plate (1). Repeat for opposite side.
  29. Tighten the NEW front strut assembly to front wheelhouse retaining nut (2). Repeat for opposite side.

    Tighten 

    Tighten the nut to 55 N.m (41 lb ft).

    30. Fig 11: Front Strut Assembly To Front Wheelhouse Retaining Nut With Dust Cover
    GM1961828Courtesy of GENERAL MOTORS COMPANY
  30. Install the dust cover (1) to the front strut assembly to front wheelhouse retaining nut (2).
  31. Raise the vehicle.
    32. Fig 12: Subframe, Heavy Mechanic's Wire & Strut Assembly
    GM1961771Courtesy of GENERAL MOTORS COMPANY
  32. Remove the heavy mechanics wire or equivalent (2) retaining the front strut assembly (1) to the front subframe (3).
    33. Fig 13: Intermediate Steering Shaft To Pinion Shaft Retaining Bolt
    GM1961761Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The intermediate steering shaft and pinion shaft splines must be installed in the position recorded during removal and aligned with the marks previously made.

  33. Connect the intermediate steering shaft (1) to the pinion shaft (3).
  34. Install NEW the intermediate steering shaft to pinion shaft retaining bolt (2).

    Tighten 

    Tighten the bolt to 25 N.m (18 lb ft).

    35. Fig 14: Wheel Speed Sensor Harness Grommets
    GM2916653Courtesy of GENERAL MOTORS COMPANY
  35. Attach the wheel speed sensor harness grommets (1) to the brake hose bracket. Refer to Front Wheel Speed Sensor Replacement .
  36. From inside the engine compartment, connect both front wheel speed sensor electrical connectors.
    37. Fig 15: Locating Brake Caliper & Heavy Mechanic's Wire
    GM1943450Courtesy of GENERAL MOTORS COMPANY
  37. Remove the heavy mechanic's wire, or equivalent support (2) from the brake caliper (1). Repeat for opposite side.
    38. Fig 16: Front Brake Caliper Anchor Plate To Front Steering Knuckle Retaining Bolts
    GM1943457Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Make sure the brake hose is not twisted or kinked after installation. Damage to the hose could result.

  38. Install the front brake caliper assembly (2) to the front steering knuckle (3). Repeat for opposite side.
  39. Install the NEW front brake caliper anchor plate to front steering knuckle retaining bolts (1).

    Tighten 

    Tighten the bolts to 60 N.m +120° (44 lb ft +120°).

    40. Fig 17: Front Brake Hose & Strut Mounted Brake Hose Retaining Bracket
    GM1943709Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Make sure the brake hose is not twisted or kinked after installation. Damage to the hose could result.

  40. Attach the front brake hose (1) to the strut mounted brake hose retaining bracket (2). Repeat for opposite side.
  41. Install the front wheels. Refer to Tire and Wheel Removal and Installation .
    42. Fig 18: Flexible Hose Securing Clip
    GM1951056Courtesy of GENERAL MOTORS COMPANY
  42. Connect the to concentric actuator cylinder feed hose (3) to the concentric actuator cylinder feed pipe (1).
    43. NOTE:

    Listen for an audible click to confirm fitting.

  43. Install the flexible hose securing clip (2).
  44. Install the starter motor. Refer to Starter Replacement (LS3) .
  45. Install the propeller shaft. Refer to Propeller Shaft Replacement .
  46. Install the exhaust heat shield. Refer to Exhaust Heat Shield Replacement - Center .
  47. Install the exhaust system. Refer to Exhaust System Replacement .
  48. Install the front bumper fascia extension. Refer to Front Bumper Fascia Extension Replacement .
  49. Lower the vehicle.
    50. Fig 19: Transmission Cooler Lines & Flexible Hoses
    GM1957881Courtesy of GENERAL MOTORS COMPANY
  50. Remove the clean lint free cloth at the automatic transmission cooler pipes (2) and the flexible hoses (1).
    51. NOTE:

    The flexible hoses are not serviced separately. Therefore if the hoses require replacement, then the hose and radiator to hose cooler hose assembly must be fitted.

  51. Align both flexible hoses with both steel cooler lines.
    52. NOTE:

    Listen for an audible click to confirm fitting.

  52. Hold the cooler line (2) and connect the flexible hose (1) by pushing together. Repeat procedure for other hose.
    53. Fig 20: Front End, Radiator & Condenser Assembly
    GM1958695Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Cut zip tie A and zip tie B and remove from around the front end assembly (3) and the radiator and condenser mount (1).

  53. Remove the large zip ties or equivalent securing the radiator and condenser assembly (2) to the front end assembly (3).
    54. Fig 21: Upper & Lower A/C Suction Pipe With Sealing O-Ring
    GM1958692Courtesy of GENERAL MOTORS COMPANY
  54. Remove the plug or cap at the A/C suction pipe ends (1 and 3).
    55. NOTE:

    The A/C sealing O-rings must be fitted dry. DO NOT lubricate the A/C sealing O-rings.

  55. Fit the NEW A/C suction pipe sealing O-ring (2) to the suction pipe.
  56. Install the upper A/C suction pipe (1) to the lower A/C suction pipe (3).
    57. Fig 22: Suction Pipe Upper To Suction Pipe Lower Retaining Nut
    GM1957875Courtesy of GENERAL MOTORS COMPANY
  57. Install the A/C suction pipe pad to A/C suction pipe retaining nut (1).

    Tighten 

    Tighten the nut to 22 N.m (16 lb ft).

    58. Fig 23: Locating Fuel Tank Hose, EVAP Purge Valve & Hose
    GM1954083Courtesy of GENERAL MOTORS COMPANY
  58. Remove the plug from the throttle body to EVAP purge valve tube (3) and EVAP purge valve (1) ends.
  59. Connect the throttle body to EVAP purge valve tube (3) to the EVAP purge valve (1).
  60. Remove the plug from the EVAP purge valve to fuel tank tube (2) and EVAP purge valve (1) ends.
  61. Connect the EVAP purge valve to fuel tank tube (2) to the EVAP purge valve (1).
    62. Fig 24: Positive Battery Post And Wiring Harness Retaining Nut
    GM1958688Courtesy of GENERAL MOTORS COMPANY
  62. Install the wiring harness (2) to the remote positive battery post.
  63. Install the remote positive battery post to wiring harness retaining bolt (1).

    Tighten 

    Tighten the bolt to 15 N.m (11 lb ft).

    64. Fig 25: Positive Battery Post Cover
    GM1958686Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Make sure the clips on the remote positive battery post cover (1) are engaged to avoid an induced rattle condition.

  64. Install the remote positive battery post cover (1).
    65. Fig 26: Fuel Rail Tube & Feed Pipe (Left Side)
    GM1954084Courtesy of GENERAL MOTORS COMPANY
  65. Remove the plug from the fuel feed pipe (2) and fuel rail pipe (1) ends.
  66. Connect the fuel rail feed pipe (2) quick connect fitting. Refer to Metal Collar Quick Connect Fitting Service , or Plastic Collar Quick Connect Fitting Service .
    67. Fig 27: Vacuum Brake Booster Hose
    GM1946585Courtesy of GENERAL MOTORS COMPANY
  67. Connect the vacuum brake booster hose (3) from the intake manifold vacuum port (1).
  68. Compress the vacuum brake booster hose retaining clamp (2) and return to its original position on the vacuum brake booster hose (3).
    69. Fig 28: Suction/Discharge Pipes & Compressor
    GM1951053Courtesy of GENERAL MOTORS COMPANY
  69. Remove the plug from the compressor (3) ports.
  70. Remove the plug from the pipes (1).
    71. NOTE:

    The A/C sealing O-rings must be fitted dry. DO NOT lubricate the A/C sealing O-rings.

  71. Fit the NEW A/C suction/discharge pipe O-rings (2) to the suction/discharge pipes (1).
  72. Connect the A/C suction/discharge line pad (1) to the A/C compressor (3).
    73. Fig 29: Suction/Discharge Pipe To Compressor Retaining Bolt
    GM1994654Courtesy of GENERAL MOTORS COMPANY
  73. Install the suction/discharge line pad (1) to compressor and tighten the retaining bolt (1) to the correct torque specification.

    Tighten 

    Tighten the bolt to 22 N.m (16 lb ft).

    74. Fig 30: A/C Refrigerant Pressure Sensor Electrical Connector
    GM1957879Courtesy of GENERAL MOTORS COMPANY
  74. Connect the electrical connector to the A/C refrigerant pressure sensor (1) to the A/C refrigerant sensor.
    75. Fig 31: Compressor Electrical Connector
    GM1951049Courtesy of GENERAL MOTORS COMPANY
  75. Connect the A/C electrical connector (1) to the A/C compressor.
    76. Fig 32: Vehicle Body Ground Cable To Cylinder Head Retaining Nut
    GM1950915Courtesy of GENERAL MOTORS COMPANY
  76. Install the vehicle body ground cable (3) to the cylinder head stud (2).
  77. Install the vehicle body ground cable to cylinder head retaining nut (1).

    Tighten 

    Tighten the bolt to 25 N.m (18 lb ft).

    78. Fig 33: Route Harness And Attach Harness Retainers
    GM3953939Courtesy of GENERAL MOTORS COMPANY
  78. route harness and attach harness retainers.
  79. install the engine harness connector (3) to the underhood junction box.
  80. Connect harness connectors (1 and 2).
  81. Install the accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement .
    82. Fig 34: ECM Electrical Connectors
    GM1951051Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Powertrain Control Module and Electrostatic Discharge Caution .

  82. Connect the ECM electrical connectors (1) to the ECM.
    83. Fig 35: ECM & Retaining Clips
    GM1951050Courtesy of GENERAL MOTORS COMPANY
  83. Engage the ECM retaining clips (1) to secure the ECM (2).
    84. Fig 36: Heater Hose Assembly Quick Connect Fittings & Retaining Clips
    GM1951055Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Listen for a audible click to confirm fitting.

  84. Connect the inlet and outlet heater hoses (3) at the heater hose assembly quick connect fittings (1).
    85. Fig 37: Coolant Bleed Pipe, Air Bleed Hose & Clamp
    GM3605744Courtesy of GENERAL MOTORS COMPANY
  85. Connect the coolant air bleed hose (3) to the coolant bleed pipe (2).
  86. Reposition the coolant bleed hose retaining clamp (1) to its original position on the coolant bleed hose (3).
  87. Tighten the coolant bleed hose retaining clamp (1).
  88. Install the radiator outlet hose. Refer to Radiator Outlet Hose Replacement .
  89. Fill the cooling system. Refer to Cooling System Draining and Filling .
    90. NOTE:

    Prelube is necessary if the engine is replaced or overhauled.

  90. If the engine is replaced with a new engine or has been overhauled, perform the Engine Prelubing procedure. Refer to Engine Prelubing (LS3) .
  91. Install the air intake duct. Refer to Air Cleaner Inlet Duct Replacement .
    92. NOTE:

    The receiver and dehydrator is a single use only component. A NEW receiver and dehydrator must be installed whenever a closed A/C system is opened or exposed to atmosphere. If the receiver and dehydrator has been replaced following a service/repair and it is deemed necessary to immediately re-open the A/C system it is not necessary to replace the receiver and dehydrator again providing the A/C system is plugged/capped correctly.

  92. Replace the receiver and dehydrator. Refer to Receiver and Dehydrator Replacement .
  93. Recharge the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging .
  94. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  95. Disable the ignition system.
  96. Crank the engine several times. Listen for any unusual noises or evidence that parts are binding.
  97. Enable the ignition system.
  98. Start the engine and listen for unusual noises.
  99. Check the vehicle oil pressure gauge and confirm that the engine has acceptable oil pressure. If necessary, install an oil pressure gauge and measure the engine oil pressure.
  100. Run the engine speed at about 1, 000 RPM until the engine has reached normal operating temperature.
  101. Listen for sticking lifters and other unusual noises.
  102. Inspect for fuel, oil, and/or other coolant leaks while the engine is running.
  103. Leak test the A/C system using the J 39400-A  halogen leak detector.
  104. Align the vehicle. Refer to Wheel Alignment Measurement .
About FixVault