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Home › Oldsmobile › 2003 › Bravada AWD › Repair and Diagnosis › Engine Mechanical › Engine Mechanical - 4.2L › Repair Instructions › On-Vehicle Repair Instructions › Engine Replacement › Installation Procedure

Installation Procedure

  1. Remove the engine from the engine stand.
  2. Slowly install the engine into the engine compartment aligning the engine mounts with the brackets.
  3. When the engine mounts are aligned, install the engine mounts, putting the mount up through the engine mount brackets before inserting into the chassis mount brackets.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Lower the engine onto the mounts and install the upper engine mount nuts.

    Tighten 

    Tighten the nuts to 70 N.m (51 lb ft).

  5. Remove the engine hoist.
  6. Lay the radiator into the radiator support, but do not install the radiator completely.
    Fig 1: Connecting Exhaust Pipe To Exhaust Manifold
    G02128628Courtesy of GENERAL MOTORS CORP.
  7. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  8. Install all of the lower bell housing bolts, excluding the top four.
  9. Remove the two through bolts securing the transmission support.
  10. Lower the transmission.
  11. Install the top four bell housing bolts.

    Tighten 

    Tighten all eleven bell housing bolts to 50 N.m (37 lb ft).

  12. Raise the transmission.
  13. Install the transmission support. Refer to TRANSMISSION SUPPORT .
  14. Install the 3 torque converter bolts.

    Tighten 

    Tighten the torque converter bolts to 60 N.m (44 lb ft).

  15. Install the torque converter bolt cover.
  16. Install the fuel tank shield, if removed.
  17. Install the engine protection shield. Refer to ENGINE PROTECTION SHIELD REPLACEMENT .
  18. Install the propeller shaft to the front axle pinion yoke. Refer to PROPELLER SHAFT REPLACEMENT - FRONT  in Propeller Shaft.
  19. Connect the exhaust pipe to the manifold and secure the pipe with the bolts.

    Tighten 

    Tighten the exhaust pipe bolts to 50 N.m (37 lb ft).

  20. Connect the oil level switch electrical connector.
  21. Connect the oil pressure sensor electrical connector.
  22. Install the oil pan drain plug.

    Tighten 

    Tighten the plug to 26 N.m (19 lb ft).

    Fig 2: Installing Oil Pan Drain Plug
    G02128629Courtesy of GENERAL MOTORS CORP.
  23. Install the lower radiator hose (1).
  24. Install the left and right wheel drive shafts. Refer to AXLE SHAFTS .
  25. Lower the vehicle.
    Fig 3: Installing Lower Radiator Hose
    G02128630Courtesy of GENERAL MOTORS CORP.
  26. Install the 4 grounds on the left side of the block (1).
  27. Install the camshaft sensor electrical connectors.
  28. Install the crankshaft sensor electrical connector.
  29. Install the knock sensor electrical connector.
    Fig 4: Installing Grounds On Left Side Of Block
    G02128631Courtesy of GENERAL MOTORS CORP.
  30. Install the generator electrical connector and battery lead (1).

    Tighten 

    Tighten the generator battery lead nut to 9 N.m (80 lb in).

  31. Install the A/C pressure sensor and clutch electrical connector.
    Fig 5: Installing Generator Electrical Connector And Battery Lead
    G02128632Courtesy of GENERAL MOTORS CORP.
  32. Install starter electrical connectors and battery lead (1).

    Tighten 

    Tighten the starter battery lead to 9 N.m (80 lb in).

  33. Install the fuel lines at the fuel pressure regulator. Refer to FUEL PRESSURE REGULATOR .
    Fig 6: Installing Starter Electrical Connectors And Battery Lead
    G02128633Courtesy of GENERAL MOTORS CORP.
  34. Install the engine harness bracket and bolt.

    Tighten 

    Tighten the engine harness bracket bolt to 50 N.m (37 lb ft).

  35. Install the front differential vent hose, to the engine harness bracket.
  36. Install all the harnesses to the engine harness bracket.
  37. Install the PCM. Refer to POWERTRAIN CONTROL MODULE .
  38. Install the power brake hose at booster
    Fig 7: Installing All Harnesses To Engine Harness Bracket
    G02128634Courtesy of GENERAL MOTORS CORP.
  39. Install the harness retainer to the original location.
  40. Install the ignition coil harness electrical connectors.
    Fig 8: Installing Harness Retainer
    G02128635Courtesy of GENERAL MOTORS CORP.
  41. Clip the transmission cooler lines to the right side of the engine block.
  42. Connect the camshaft phaser actuator valve electrical connector.
  43. Connect the front axle actuator electrical connector.
  44. Connect the A/C line at the accumulator.
  45. Install the oxygen sensor electrical connector.
    Fig 9: Clipping Transmission Cooler Lines To Right Side Of Engine Block
    G02128636Courtesy of GENERAL MOTORS CORP.
  46. Remove the lift hook J 44220  .
    Fig 10: Removing Lift Hook
    G02128637Courtesy of GENERAL MOTORS CORP.
  47. Install the AIR adapter and secure the adapter with the studs.

    Tighten 

    Tighten the AIR adapter studs to 25 N.m (18 lb ft).

    Fig 11: Installing AIR Adapter And Securing With Studs
    G02128638Courtesy of GENERAL MOTORS CORP.
  48. Install the transmission filler tube bracket to AIR adapter stud and secure the bracket with the nut.

    Tighten 

    Tighten the nut to 10 N.m (89 lb in).

  49. Install the heater hoses to the heater core. Refer to HEATER HOSE REPLACEMENT - INLET (BODY TYPE VIN 3) or HEATER HOSE REPLACEMENT - INLET (BODY TYPE VIN 6)  and HEATER HOSE REPLACEMENT - OUTLET (LL8) in Heating, Ventilation, and Air Conditioning.
  50. Install the power steering pump.
    Fig 12: Installing Transmission Filler Tube Bracket To AIR Adapter Stud
    G02128639Courtesy of GENERAL MOTORS CORP.
  51. Install the power steering pump bolts.

    Tighten 

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

  52. Install the drive belt. Refer to DRIVE BELT REPLACEMENT   .
  53. Install cooling fan and shroud, tilting the radiator forward for clearance.
  54. Finish installing the radiator. Refer to RADIATOR REPLACEMENT (BODY VIN CODE 6)  or RADIATOR REPLACEMENT (BODY VIN TYPE 3)  in Engine Cooling.
  55. Install transmission cooler lines together.
  56. Install map Sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR .
  57. Install the throttle body. Refer to THROTTLE BODY .
    Fig 13: Installing Power Steering Pump Bolts
    G02128640Courtesy of GENERAL MOTORS CORP.
  58. Install the hood latch. Refer to HOOD LATCH SUPPORT REPLACEMENT  in Body Front End.
  59. Install the head lamp housing. Refer to LIGHTING SYSTEMS  or LIGHTING SYSTEMS  in Body Front End.
  60. Install the grill. Refer to GRILLE REPLACEMENT (GMC)  or GRILLE REPLACEMENT (OLDSMOBILE)  or GRILLE REPLACEMENT (CHEVROLET)  in Exterior Trim.
  61. Install the air intake baffle. Refer to AIR INTAKE BAFFLE REPLACEMENT - RADIATOR  in Engine Controls - 4.2L.
  62. Install the washer solvent container. Refer to WASHER SOLVENT CONTAINER REPLACEMENT in Wipers/Washer Systems.
  63. Install the air cleaner assembly. Refer to AIR CLEANER ASSEMBLY .
  64. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE  in Engine Electrical.
  65. Install the hood. Refer to HOOD REPLACEMENT  in Body Front End.
  66. Service the engine oil.
  67. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6)  or DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3)  in Engine Cooling.
  68. Recharge the refrigerant. Refer to REFRIGERANT RECOVERY AND RECHARGING  in Heating, Ventilation and Air Conditioning.
  69. Perform the CKP system variation learn procedure. Refer to CKP SYSTEM VARIATION LEARN PROCEDURE .
    IMPORTANT: After an overhaul, the engine should be tested. Use the following procedure after the engine is installed in the vehicle.
    • Disable the ignition system.
    • Crank the engine several times. Listen for unusual noises or evidence that parts are binding.
    • Enable the ignition system.
    • Start the engine and listen for unusual noises.
    • Check the vehicle oil pressure gage or light and confirm that the engine has acceptable oil pressure.
    • Run the engine speed at about 1000 RPM until the engine has reached normal operating temperature.
    • Listen for a sticking lifter and other unusual noises.
    • Inspect for fuel, oil and/or coolant leaks while the engine is running.
    • Perform a final inspection for the proper engine oil and coolant levels.
  70. Install the hood. Refer to HOOD REPLACEMENT  in Body Front End.
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