GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1997 🢒 Firebird 🢒 Engine 🢒 Engine Mechanical - 5.7L (LT1) 🢒 Engine Replacement

Removal Procedure
  1. Recover the air conditioning system. Refer to SECTION 1B.
  2. Disconnect the negative battery cable.
  3. Disconnect the positive battery cable.
  4. Raise and suitably support the vehicle. Refer to SECTION 0A.
  5. Remove the front wheels and tires. Refer to SECTION 3E.
  6. Drain the coolant. Refer to SECTION 6B.
  7. Drain the engine oil.
  8. Remove the oxidation catalytic converter. Refer to SECTION 6F.
  9. For the automatic transmission, remove the torque converter bolts.
  10. Remove the front fascia lower deflectors. Refer to SECTION 10-5.
  11. Remove the stabilizer bar bolts. Refer to SECTION 3C.
  12. Remove the accessory drive belt. Refer to Drive Belt Replacement .
  13. Remove the air conditioning hose from the condenser and the compressor. Refer to SECTION 1B.
  14. For the automatic transmission, remove the transmission fluid cooler lines from the radiator.
  15. Remove the lower radiator hose from the radiator. Refer to SECTION 6B.
  16. Remove the lower heater hose from the water pump. Refer to

    17. SECTION 6B.

  17. Remove the electrical ground straps from the right side of the engine block.
  18. Remove the shift linkage from the transmission.
  19. Remove the propeller shaft after match marking. Refer to SECTION 4A.
  20. Remove the torque arm from the transmission. Refer to SECTION 3D.
  21. Remove the intermediate steering shaft from the rack and pinion. Refer to SECTION 3F4.
  22. Remove the electrical ground straps from the left side of the frame rail.
  23. Remove the electrical connectors from the wheel speed sensors.
  24. Lower the vehicle.
  25. Remove the air intake duct.

    26. Object Number: 39907 Size: SH
  26. Remove the fuel lines from the fuel rail.
  27. Remove the accelerator control/cruise control servo cable adjuster. Refer to SECTION 5E2.
  28. Remove the cruise and accelerator control cables from the throttle body.
  29. Remove the upper and lower radiator hoses from the water pump. Refer to SECTION 6B.
  30. Remove the brake booster vacuum hose.
  31. Remove the upper heater hose from the water pump. Refer to SECTION 6B.
  32. Remove the engine coolant air bleed pipe hose from the radiator. Refer to SECTION 6B.
  33. Remove the air conditioning receiver and the dehydrator hose from the condenser. Refer to SECTION 1B.
  34. Remove the air conditioning hose from the expansion tube. Refer to SECTION 1B.
  35. Remove the brake lines from the Antilock Brake System (ABS) brake combination valve. Refer to SECTION 5.
  36. Remove the power steering reservoir and reposition. Refer to SECTION 1B.
  37. Remove the brake lines and the clips from the ABS hydraulic modulator. Refer to SECTION 5.
  38. Remove the right-hand body hinge pillar trim panel. Refer to SECTION 10-5.
  39. Remove the three engine wiring harness connectors (Blue, black, white connectors) and the evaporator temperature sensor connector.
  40. Remove the forward lamp wiring harness connectors.
  41. Remove the Powertrain Control Module (PCM) and harness. Place the PCM and the harness on top of the engine.
  42. Remove the engine wire harness through the front of the dash.
  43. Place the harness on top of the engine.
  44. Remove the positive lead at the generator.
  45. Remove the positive lead at the junction block.
  46. Remove the negative lead at the mounting stud, located next to the junction block.
  47. Remove the lower shock attachment bolts and the nuts from the lower control arm.
  48. Remove the upper control arm ball stud from the steering knuckle. Refer to SECTION 3C.
  49. Raise and suitably support the vehicle. Refer to SECTION 0A.
  50. Position the lift table under the engine and the front crossmember. Use the J 39580 or the equivalent.
  51. Remove the front crossmember and the transmission support bolts. Refer to SECTION 10-3.
  52. Raise the vehicle from the front crossmember engine and the transmission.
  53. Secure the struts to the front crossmember.
  54. Remove the transmission. Refer to SECTIONS 7A or 7B.
  55. Remove the clutch housing and the clutch from the manual transmission, if equipped. Refer to SECTION 7C.
  56. Remove the power steering lines from the power steering pump. Refer to SECTION 3B.
  57. Remove the hoses from the air conditioning compressor. Refer to SECTION 1B.
  58. Remove the air conditioning compressor bolts and the compressor. Refer to SECTION 1B.

    59. Object Number: 40675 Size: MH
  59. Remove the engine mount through bolts.
  60. Remove the engine from the front crossmember.

Installation Procedure
  1. Install the engine to the front crossmember.

    2. Object Number: 40675 Size: MH
  2. Install the engine mount through bolts.
  3. Install the power steering lines to the power steering pump. Refer to SECTION 3B.
  4. Install the air conditioning compressor and the bolts. Refer to SECTION 1B.
  5. Install the hoses to the air conditioning compressor. Refer to SECTION 1B.
  6. Install the clutch housing and the clutch, if removed.
  7. Install the transmission. Refer to SECTIONS 7A or 7B.
  8. Position the engine lift table and install the engine, transmission and the engine frame by lowering the vehicle to the front crossmember.
  9. Install the front crossmember and the transmission support bolts. Refer to SECTION 10-3.
  10. Remove the engine lift table.
  11. Lower the vehicle.
  12. Install the upper control arm ball stud to the steering knuckle. Refer to SECTION 3C.
  13. Install the lower shock attachment bolts and nuts to the lower control arm.
  14. Install the negative lead at the mounting stud, located next to the junction block.
  15. Install the positive lead at the generator.

    16. Important: When reinstalling the engine wiring harness back through the front of the dash, the rubber grommet must be installed properly to ensure correct sealing. Replace the grommet if the grommet is torn or damaged.

  16. Install the engine wire harness through the front of the dash.
  17. Install the PCM and the harness.
  18. Install the forward lamp harness connectors.
  19. Install the wiring harness connectors.
  20. Install the right-hand body hinge pillar trim panel. Refer to SECTION 10-5.
  21. Install the brake lines and the clips to the ABS hydraulic modulator. Refer to SECTION 5.
  22. Install the brake lines to the ABS brake combination valve. Refer to SECTION 5.
  23. Install the air conditioning hose to the expansion tube. Refer to SECTION 1B.
  24. Install the air conditioning receiver and the dehydrator hose to the condenser. Refer to SECTION 1B.
  25. Install the engine coolant air bleed pipe hose to the radiator. Refer to SECTION 6B.
  26. Install the brake booster vacuum hose.
  27. Install the upper and lower radiator hose to the water pump. Refer to SECTION 6B.
  28. Install the accelerator control/cruise control servo cable adjuster. Refer to SECTION 5E2.
  29. Install the cruise and the accelerator control cables to the throttle body.

    30. Object Number: 39907 Size: SH
  30. Install the fuel lines to the fuel rail.
  31. Raise and suitably support the vehicle. Refer to SECTION 0A.
  32. Install the electrical connectors to the wheel speed sensor.
  33. Install the electrical ground straps to the left side of the frame rail.
  34. Install the intermediate steering shaft to rack and pinion. Refer to SECTION 3F4.
  35. Install the torque arm to transmission. Refer to SECTION 3D.
  36. Install the propeller shaft. Refer to SECTION 4A.
  37. Install the shift linkage to the transmission.
  38. Install the electrical ground straps to the right side of the engine block.
  39. Install the lower heater hose to the water pump. Refer to SECTION 6B.
  40. Install the lower radiator hose to the radiator. Refer to SECTION 6B.
  41. For the automatic transmission, install the transmission fluid cooler lines to radiator.
  42. Install the accessory drive belt. Refer to Drive Belt Replacement .
  43. Install the air conditioning hose to the condenser and the compressor. Refer to SECTION 1B.
  44. Install the stabilizer bar bolts. Refer to SECTION 3C.
  45. Install the front fascia lower deflectors. Refer to SECTION 10-5.
  46. Install the torque converter bolts on an automatic transmission engine.
  47. Install the oxidation catalytic converter. Refer to SECTION 6F.
  48. Lower the vehicle.
  49. Refill with engine oil.
  50. Refill with engine coolant. Refer to SECTION 6B.
  51. Install the front wheels and tires. Refer to SECTION 3E.
  52. Connect the positive battery cable.

    53. Tighten
    Tighten the positive battery cable to 15 N·m (11 lb ft).

  53. Connect the negative battery cable.

    54. Tighten
    Tighten the negative battery cable to 15 N·m (11 lb ft).

  54. Bleed the brake system. Refer to SECTION 5E1.
  55. Bleed the power steering system. Refer to SECTION 3B.
  56. Charge the air conditioning system. Refer to SECTION 1B.
  57. Install the air intake duct.
  58. Align the wheels. Refer to SECTION 3A.