Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Engine 1

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Removal & Installation



4.3L Engine


Remove or disconnect the following:
 



Battery negative cable
 
Coolant
 
A/C refrigerant, if equipped
 
Oil pan skid plate
 
Engine shield

Click image to see an enlarged view

Fig. Engine shield removal-4.8L, 5.3L, 6.0L

 
Starter.
 
Transmission cover
 
Bolt holding the bracket for the starter cables and transmission cooler lines, if equipped
 
Nuts at the catalytic converter pipe
 
Exhaust pipes from the exhaust manifolds
 
Bolts holding the brackets to the oil pan for both battery cables
 
Crankshaft position sensor electrical connector and remove the harness from the retainer
 
Low oil level sensor electrical connector and remove the wire harness from the retainer.
 
Bolt holding the battery negative cable and a ground cable to the engine
 
Torque converter to flywheel bolts, if equipped, through the starter opening
 
Engine to transmission bolts

Click image to see an enlarged view

Fig. Hood in the service position-4.8L, 5.3L, 6.0L

 

  1. Move the hood hinge bolts to hold the hood in the service position.
  2.  
  3. Remove or disconnect the following:
    CAUTION
    In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.


    WARNING
    In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine.


    NOTE
    Remove the AIR pipes before engine removal. The AIR pipes can break or damage easily causing erratic engine operation.



    PCV hose from the air cleaner outlet duct
     
    Air cleaner outlet duct from the throttle body and the air cleaner assembly
     
    Fan shroud
     
    Drive belt

    Click image to see an enlarged view

    Fig. Power steering mount bracket removal-4.8L, 5.3L, 6.0L

     
    Engine cooling fan
     
    Radiator inlet hose from the engine
     
    Radiator outlet hose from the engine
     



    Accelerator control cable
     
    Cruise control cable from the throttle body and the bracket on the throttle body and intake manifold, if equipped
     
    Engine wiring harness and clip from the accelerator control cable bracket
     
    Accelerator control cable bracket from the throttle body
     
    A/C hoses from the compressor and the accumulator, if equipped
     
    Secondary air injection (AIR) crossover pipe from the AIR pipe assemblies
     



    AIR pipe assemblies from the left exhaust manifold, if equipped
     
    AIR pipe assembly from the AIR pump. Remove the AIR pipe assembly from the right exhaust manifold, if equipped.

    Click image to see an enlarged view

    Fig. Engine mount disconnect-4.8L, 5.3L, 6.0L

     
    The A/C pressure switch, if equipped
     
    The A/C compressor clutch, if equipped
     
    The exhaust gas recirculation (EGR) valve
     
    The generator battery positive cable
     
    The fuel meter body assembly
     
    The idle air control (IAC) motor
     
    The throttle position (TP) sensor
     
    The engine coolant temperature (ECT) sensor
     
    The EVAP canister purge solenoid valve
     
    The manifold absolute pressure (MAP) sensor
     
    The ignition control module (ICM)
     
    The ignition coil
     
    The engine oil pressure gauge sensor
     
    The distributor
     
    The knock sensor (KS)
     
    Nuts holding the bracket for the engine wiring harness to the intake manifold studs
     
    Bolt holding the engine wiring harness clip to the battery positive cable junction block bracket
     
    Bracket for the battery positive cable junction block from the power steering pump mounting bracket
     
    Battery positive and negative cables
     
    Nut holding the ground wire to the stud at the rear of the right cylinder head
     
    Stud holding the engine wiring harness bracket to the rear of the right cylinder head
     
    Nut holding the engine wiring harness bracket to the stud for the EVAP canister purge solenoid valve
     
    Bolt holding the ground strap and the ground wire to the rear of the left cylinder head. Move the engine wiring harness aside.
     
    Both heater hoses from the engine and the cowl
     
    Distributor cap
     
    Fuel pipes at the rear of the engine
     
    Hose to the EVAP purge canister solenoid valve
     
    Power brake booster vacuum hose from the engine and the vacuum brake booster
     
    Nut holding the power steering pump rear bracket to the side of the engine
     
    Nut holding the power steering pump rear bracket to the front of the engine
     
    The three bolts and the nut holding the power steering pump mounting bracket to the engine
     

  4.  
  5. With the power steering pump and the A/C compressor still attach, slide the power steering pump mount bracket off the stud and set aside.
  6.  
  7. Remove or disconnect the following:
    NOTE
    Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.



    Water outlet
     
    EGR valve inlet pipe from the intake and exhaust manifold
     

  8.  
  9. Attach the engine crane to the left front and right rear intake manifold mounting bolts.
  10.  
  11. Remove the engine motor mount to frame bracket bolts.
  12.  
  13. Support the transmission with a suitable jack.
  14.  
  15. Remove the engine.
  16.  

To install:

  1. Install or connect the following:

    Engine in the vehicle
     
    Engine mount to frame bracket bolts. Tighten the bolts to 65 Nm (50 ft. lbs.).
     

  2.  
  3. Remove the lifting device. Apply thread lock GM P/N 12345382 or equivalent to the threads of the lower intake manifold bolts. Install the intake manifold bolts.
    1. Tighten the bolts the first pass to 3 Nm (27 inch lbs.).
    2.  
    3. Tighten the bolts the second pass to 12 Nm (106 inch lbs.).
    4.  
    5. Tighten the bolts the final pass to 15 Nm (11 ft. lbs.).
    6.  

  4.  
  5. Loosely install one transmission to engine bolt. Remove the support jack from under the transmission.
  6.  
  7. Install the EGR valve inlet pipe to the intake and the exhaust manifold.
    1. Tighten the EGR valve inlet pipe intake nut to 25 Nm (18 ft. lbs.).
    2.  
    3. Tighten the EGR valve inlet pipe exhaust nut to 30 Nm (22 ft. lbs.).
    4.  
    5. Tighten the EGR valve inlet pipe clamp bolt to 25 Nm (18 ft. lbs.).
    6.  

  8.  
  9. Install the water outlet.
  10.  
  11. Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud.
  12.  
  13. Position the power steering pump rear bracket on the studs.
  14.  
  15. Install or connect the following:

    Power steering pump mounting bracket three bolts and the nut
     
    Nut for the power steering pump rear bracket to the front of the engine. Tighten the power steering pump mounting bracket and the power steering pump rear bracket bolts and the nuts to 41 Nm (30 ft. lbs.).
     
    Fuel pipes
     
    Hose to the EVAP purge canister solenoid valve
     
    Vacuum brake booster hose to engine and the vacuum brake booster
     
    Distributor cap
     
    Both heater hoses to the engine and the cowl
     
    AIR pipe assembly with new gaskets to the right exhaust manifold, if equipped. Install the AIR pipe nuts and bracket bolt. Tighten the AIR nuts to 25 Nm (18 ft. lbs.). Tighten the AIR bracket bolt to 10 Nm (88 ft. lbs.).
     
    AIR pipe assembly to the AIR pump
     
    AIR pipe assembly with new gaskets to the left exhaust manifold, if equipped. Install the AIR pipe nuts and bracket bolt. Tighten the AIR nuts to 25 Nm (18 ft. lbs.). Tighten the AIR bracket bolt to 10 Nm (88 ft. lbs.).
     
    AIR crossover pipe to the AIR pipe assemblies
     
    Position the engine wiring harness.
     

  16.  
  17. Connect the following electrical connectors:

    The A/C pressure switch, if equipped
     
    The A/C compressor clutch, if equipped
     
    The exhaust gas recirculation (EGR) valve
     
    The generator battery positive cable
     
    The fuel meter body assembly
     
    The idle air control (IAC) motor
     
    The throttle position (TP) sensor
     
    The engine coolant temperature (ECT) sensor
     
    The EVAP canister purge solenoid valve
     
    The manifold absolute pressure (MAP) sensor
     
    The ignition control module (ICM)
     
    The ignition coil
     
    The engine oil pressure gauge sensor
     
    The distributor
     
    The knock sensor (KS)
     

  18.  
  19. Install the bolt holding the ground strap and the ground wire to the rear of the left cylinder head. Tighten the ground strap and ground wire bolt to 16 Nm (12 ft. lbs.).
  20.  
  21. Position the engine wiring harness bracket on the EVAP purge canister solenoid valve stud and install the nut.
  22.  
  23. Install the stud holding the wire harness bracket to the rear of the right cylinder head. Tighten the nut on the EVAP solenoid to 9 Nm (80 inch lbs.). Tighten the stud at rear of the cylinder head to 25 Nm (18 ft. lbs.).
  24.  
  25. Install the nut holding the ground wire on the stud at the rear of the right cylinder head. Tighten the ground wire nut to 16 Nm (12 ft. lbs.).
  26.  
  27. Position the battery positive and negative cables. Do not connect the negative battery cable to the battery.
  28.  
  29. Install or connect the following:
    CAUTION
    In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.



    Battery positive cable junction block bracket and bolt to the power steering pump mounting bracket. Tighten the junction block bracket bolt to 25 Nm (18 ft. lbs.).
     
    Bolt holding the engine wiring harness bracket to battery positive cable junction block bracket.
     
    Engine wiring harness bracket on the intake manifold studs and install the nuts. Tighten the wiring harness bracket nuts to 12 Nm (106 inch lbs.). Tighten the wiring harness bracket bolt to 9 Nm (80 ft. lbs.).
     
    A/C hoses to the A/C compressor and the accumulator.
     
    Accelerator control cable bracket and nuts to the throttle body. Tighten the nuts to 9 Nm (80 inch lbs.).
     
    Engine wire harness and clip to the accelerator control cable bracket
     



    NEW accelerator control cable
     
    Cruise control cable to the throttle body and the accelerator control cable bracket, if equipped.
     
    Radiator inlet hose
     
    Radiator outlet hose
     
    Engine cooling fan
     
    Drive belt
     
    Upper and lower radiator shroud
     
    Air cleaner outlet duct to the throttle body and the air cleaner assembly
     
    PCV hose to the air inlet duct
     

  30.  
  31. Move the hood hinge bolts from the service position to the normal operating position.
  32.  
  33. Raise the vehicle.
  34.  
  35. Install or connect the following:

    Remaining transmission to engine bolts except for the one where the transmission cover mounts
     
    Torque converter to flywheel
     
    Transmission cover and bolts. Tighten the transmission cover to oil pan bolt to 12 Nm (106 inch lbs.). Tighten the transmission cover to transmission bolt to 47 Nm (34 ft. lbs.).
     
    Bolt holding the bracket for the starter cables and the transmission cooler pipes. Tighten the bracket bolt to 9 Nm (80 inch lbs.).
     
    Bolts holding the positive and negative battery cable brackets to the oil pan. Tighten the bracket bolts to 12 Nm (106 inch lbs.).
     
    Bolt for the battery negative cable and ground wire to the front of the engine. Tighten the battery negative cable and ground wire bolt to 25 Nm (18 ft. lbs.).
     
    CKP sensor and install the harness in the retainer
     
    Low oil level sensor and install the wire harness in the retainer
     
    Exhaust pipe to the exhaust manifolds and tighten the nuts at the catalytic converter flange
     
    Starter motor
     
    Oil pan skid plate. Tighten the oil pan skid plate bolt to 20 Nm (15 ft. lbs.).
     
    Engine shield
     

  36.  
  37. Lower the vehicle.
  38.  
  39. Install or connect the following:


  40.  
  41. Battery negative cable
  42.  
  43. Engine oil
  44.  
  45. Coolant
  46.  
  47. Recharge the A/C system.
  48.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Drain the engine oil.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Hood
     
    Air cleaner
     
    Accessory drive belt
     
    Fan
     
    Water pump pulley
     
    Radiator and shroud
     
    Heater hoses at the engine
     
    Accelerator, cruise control and detent linkage if used
     
    Air conditioning compressor, if used, and lay aside
     
    Power steering pump, if used, and lay aside
     
    Wiring from the engine
     
    Fuel line
     
    Vacuum lines from the intake manifold
     
    Exhaust pipes from the manifold
     
    Strut rods at the engine mountings, if used
     
    Flywheel or torque converter cover
     
    Wiring along the oil pan rail
     
    Starter
     
    Wire for the fuel gauge
     
    Converter-to-flex plate bolts, if equipped with automatic transmission
     

  8.  
  9. Support the transmission

    Click image to see an enlarged view

    Fig. Transmission mounting bolts-4.3L engines



    Bell housing to engine bolts
     
    Rear engine mounting to frame bolts and the front through bolts and the engine
     

  10.  

To install:

  1. Lower the engine.
  2.  
  3. Install or connect the following:

    Engine mounting bolts. Torque the rear engine mounting to frame bolts or nuts to 45 ft. lbs. (54 Nm), the front through-bolts to 70 ft. lbs. (97 Nm) and the front nuts to 50 ft. lbs. (67 Nm).
     
    Bell housing to engine bolts and torque to 35 ft. lbs. (47 Nm)
     

  4.  
  5. Remove the transmission support.

    Converter-to-flex plate bolts and tighten to 35 ft. lbs. (47 Nm)
     
    Fuel gauge wiring
     
    Starter
     
    Flywheel or torque converter cover
     
    Strut rods at the engine mountings, if used
     
    Exhaust pipes at the manifold
     
    Vacuum lines to the intake manifold
     
    Fuel line
     
    Engine wiring harness
     
    Power steering pump, if used
     
    Air conditioning compressor, if used
     
    Accelerator, cruise control and detent linkage
     
    Heater hoses
     
    Radiator and shroud
     
    Accessory drive belts
     
    Hood
     
    Negative battery cable
     

  6.  
  7. Refill coolant and engine oil.
  8.  

  1. Remove or disconnect the following:

    Battery negative cable
     
    Coolant
     
    A/C refrigerant, if equipped
     
    Oil pan skid plate
     
    Engine shield

    Click image to see an enlarged view

    Fig. Engine shield removal-4.3L engines

     



    Starter.
     
    Transmission cover
     
    Bolt holding the bracket for the starter cables and transmission cooler lines, if equipped
     
    Nuts at the catalytic converter pipe
     
    Exhaust pipes from the exhaust manifolds
     
    Bolts holding the brackets to the oil pan for both battery cables
     
    Crankshaft Position (CKP) sensor electrical connector and remove the harness from the retainer
     
    Low oil level sensor electrical connector and remove the wire harness from the retainer
     
    Bolt holding the battery negative cable and ground cable to the engine
     
    Torque converter-to-flywheel bolts, if equipped, through the starter opening
     
    Engine to transmission bolts

    Click image to see an enlarged view

    Fig. Hood in the service position

     

  2.  
  3. Move the hood hinge bolts to hold the hood in the service position.
  4.  
  5. Remove or disconnect the following:
    CAUTION
    In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.


    WARNING
    In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine.


    NOTE
    Remove the AIR pipes before engine removal. The AIR pipes can break or damage easily causing erratic engine operation.



    Positive Crankcase Ventilation (PCV) hose from the air cleaner outlet duct
     
    Air cleaner outlet duct from the throttle body and the air cleaner assembly
     
    Fan shroud
     
    Drive belt
     
    Engine cooling fan
     
    Radiator inlet and outlet hoses from the engine
     



    Accelerator control cable
     
    Cruise control cable from the throttle body and the bracket on the throttle body and intake manifold, if equipped
     
    Engine wiring harness and clip from the accelerator control cable bracket
     
    Accelerator control cable bracket from the throttle body
     
    A/C hoses from the compressor and the accumulator, if equipped
     
    Secondary Air Injection (AIR) crossover pipe from the AIR pipe assemblies
     



    AIR pipe assemblies from the left exhaust manifold, if equipped
     
    AIR pipe assembly from the AIR pump
     
    AIR pipe assembly from the right exhaust manifold, if equipped.
     
    A/C pressure switch, if equipped
     
    A/C compressor clutch, if equipped
     
    Exhaust Gas Recirculation (EGR) valve
     
    Battery positive cable
     
    Fuel meter body
     
    Idle Air Control (IAC) motor
     
    Throttle Position (TP) sensor
     
    Engine Coolant Temperature (ECT) sensor
     
    EVAP canister purge solenoid valve
     
    Manifold Absolute Pressure (MAP) sensor
     
    Ignition Control Module (ICM)
     
    Ignition coil
     
    Engine oil pressure gauge sensor
     
    Distributor
     
    Knock Sensor (KS)
     
    Nuts holding the bracket for the engine wiring harness to the intake manifold studs
     
    Bolt holding the engine wiring harness clip to the battery positive cable junction block bracket
     
    Bracket for the battery positive cable junction block from the power steering pump mounting bracket
     
    Battery positive and negative cables, if not done already
     
    Nut holding the ground wire to the stud at the rear of the right cylinder head
     
    Stud holding the engine wiring harness bracket to the rear of the right cylinder head
     
    Nut holding the engine wiring harness bracket to the stud for the EVAP canister purge solenoid valve
     
    Bolt holding the ground strap and the ground wire to the rear of the left cylinder head. Move the engine wiring harness aside.
     
    Both heater hoses from the engine and the cowl
     
    Distributor cap
     
    Fuel pipes at the rear of the engine
     
    Hose from the EVAP purge canister solenoid valve
     
    Power brake booster vacuum hose
     
    Nuts holding the power steering pump rear bracket to the side and front of the engine
     
    Three bolts and the nut holding the power steering pump mounting bracket to the engine
     

  6.  
  7. With the power steering pump and the A/C compressor still attached, slide the power steering pump mount bracket off the stud and set aside.

    Water outlet
     
    EGR valve inlet pipe from the intake and exhaust manifold
     

  8.  
  9. Attach the engine crane to the left front and right rear intake manifold mounting bolts.
  10.  
  11. Remove the engine motor mount to frame bracket bolts.
  12.  
  13. Support the transmission with a suitable jack.
  14.  
  15. Remove the engine.
  16.  

To install:

  1. Install or connect the following:

    Engine in the vehicle
     
    Engine mount to frame bracket bolts. Tighten the bolts to 48 ft. lbs. (65 Nm).
     

  2.  
  3. Remove the lifting device.
  4.  
  5. Apply thread lock GM P/N 12345382 or equivalent to the threads of the lower intake manifold bolts. Install the bolts and tighten as follows:
    1. First pass: 27 inch lbs. (3 Nm)
    2.  
    3. Second pass: 106 inch lbs. (12 Nm)
    4.  
    5. Final pass: 11 ft. lbs. (15 Nm)
    6.  

  6.  
  7. Loosely install one transmission to engine bolt. Remove the support jack from under the transmission.
  8.  
  9. Install the EGR valve inlet pipe to the intake and the exhaust manifold and tighten as follows:
    1. Tighten the EGR valve inlet pipe intake nut to 18 ft. lbs. (25 Nm).
    2.  
    3. Tighten the EGR valve inlet pipe exhaust nut to 22 ft. lbs. (30 Nm).
    4.  
    5. Tighten the EGR valve inlet pipe clamp bolt to 18 ft. lbs. (25 Nm).
    6.  

  10.  
  11. Install the water outlet.
  12.  
  13. Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud.
  14.  
  15. Position the power steering pump rear bracket on the studs.
  16.  
  17. Install or connect the following:

    Power steering pump mounting bracket bolts and the nut
     
    Nut for the power steering pump rear bracket to the front of the engine. Tighten the power steering pump mounting bracket and the power steering pump rear bracket bolts and the nuts to 30 ft. lbs. (41 Nm).
     
    Fuel pipes
     
    Hose to the EVAP purge canister solenoid valve
     
    Vacuum brake booster hose to engine and the vacuum brake booster
     
    Distributor cap
     
    Both heater hoses to the engine and the cowl
     
    AIR pipe assembly with new gaskets to the right exhaust manifold, if equipped
     
    AIR pipe nuts and bracket bolt. Tighten the nuts to 18 ft. lbs. (25 Nm) and the bolt to 89 inch lbs. (10 Nm).
     
    AIR pipe assembly to the AIR pump
     
    AIR pipe assembly with new gaskets to the left exhaust manifold, if equipped. Install the AIR pipe nuts and bracket bolt. Tighten the to 18 ft. lbs. (25 Nm) and the bolt to 89 inch lbs. (10 Nm).
     
    AIR crossover pipe to the AIR pipe assemblies
     
    Engine wiring harness
     
    A/C pressure switch
     
    A/C compressor clutch
     
    EGR valve
     
    Alternator battery positive cable
     
    Fuel meter body assembly
     
    IAC motor
     
    TP sensor
     
    ECT sensor
     
    EVAP canister purge solenoid valve
     
    MAP sensor
     
    ICM
     
    Ignition coil
     
    Engine oil pressure gauge sensor
     
    Distributor
     
    Knock sensor
     

  18.  
  19. Install the bolt holding the ground strap and the ground wire to the rear of the left cylinder head. Tighten the ground strap and ground wire bolt to 12 ft. lbs. (16 Nm).
  20.  
  21. Position the engine wiring harness bracket on the EVAP purge canister solenoid valve stud and install the nut.
  22.  
  23. Install the stud holding the wire harness bracket to the rear of the right cylinder head. Tighten the nut on the EVAP solenoid to 80 inch lbs. (9 Nm). Tighten the stud at rear of the cylinder head to 18 ft. lbs. (25 Nm).
  24.  
  25. Install the nut holding the ground wire on the stud at the rear of the right cylinder head. Tighten the ground wire nut to 12 ft. lbs. (16 Nm).
  26.  
  27. Position the battery positive and negative cables. Do not connect the negative battery cable to the battery.
  28.  
  29. Install or connect the following:
    CAUTION
    In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.



    Battery positive cable junction block bracket and bolt to the power steering pump mounting bracket. Tighten the bolt to 18 ft. lbs. (25 Nm).
     
    Bolt holding the engine wiring harness bracket to battery positive cable junction block bracket
     
    Engine wiring harness bracket on the intake manifold studs. Tighten the nuts to 106 inch lbs. (12 Nm) and the bolt to 80 inch lbs. (9 Nm).
     
    A/C hoses
     
    Accelerator control cable bracket. Tighten the nuts to 80 inch lbs. (9 Nm).
     
    Engine wire harness and clip to the accelerator control cable bracket
     



    NEW accelerator control cable
     
    Cruise control cable
     
    Radiator inlet and outlet hoses
     
    Engine cooling fan
     
    Drive belt
     
    Upper and lower radiator shroud
     
    Air cleaner outlet duct to the throttle body and the air cleaner assembly
     
    PCV hose to the air inlet duct
     

  30.  
  31. Move the hood hinge bolts from the service position to the normal operating position.
  32.  
  33. Raise the vehicle.
  34.  
  35. Install or connect the following:

    Remaining transmission to engine bolts except for the one where the transmission cover mounts
     
    Torque converter to flywheel
     
    Transmission cover and bolts. Tighten the transmission cover to oil pan bolt to 106 inch lbs. (12 Nm). Tighten the transmission cover to transmission bolt to 34 ft. lbs. (47 Nm).
     
    Bolt holding the bracket for the starter cables and the transmission cooler pipe and tighten to 80 inch lbs. (9 Nm)
     
    Positive and negative battery cable brackets-to-oil pan bolts and tighten to 106 inch lbs. (12 Nm).
     
    Bolt for the battery negative cable and ground wire to the front of the engine. Tighten the battery negative cable and ground wire bolt to 18 ft. lbs. (25 Nm).
     
    CKP sensor and install the harness in the retainer
     
    Low oil level sensor and install the wire harness in the retainer
     
    Exhaust pipe to the exhaust manifolds and tighten the nuts at the catalytic converter flange
     
    Starter motor
     
    Oil pan skid plate and tighten bolt to 15 ft. lbs. (20 Nm)
     
    Engine shield
     

  36.  
  37. Lower the vehicle.

    Battery negative cable
     
    Engine oil
     
    Coolant
     

  38.  
  39. Recharge the A/C system.
  40.  

4.3L, 5.0L & 5.7L Engines
  1. Drain the cooling system.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Hood
     
    Air cleaner
     
    Accessory drive belt
     
    Fan
     
    Water pump pulley
     
    Radiator and shroud
     
    Heater hoses at the engine
     
    Accelerator, cruise control and detent linkage if used
     
    Air conditioning compressor, if used, and lay aside
     
    Power steering pump, if used, and lay aside
     
    Wiring from the engine
     
    Fuel line
     
    Vacuum lines from the intake manifold
     
    Exhaust pipes from the manifold
     
    Strut rods at the engine mountings, if used
     
    Flywheel or torque converter cover
     
    Wiring along the oil pan rail
     
    Starter
     
    Wire for the fuel gauge
     
    Converter-to-flex plate bolts, if equipped with automatic transmission
     

  6.  
  7. Support the transmission

    Bell housing to engine bolts
     
    Rear engine mounting to frame bolts and the front through bolts and the engine
     

  8.  

To install:

  1. Lower the engine.
  2.  
  3. Install or connect the following:

    Engine mounting bolts. Torque the rear engine mounting to frame bolts or nuts to 45 ft. lbs. (54 Nm), the front through-bolts to 70 ft. lbs. (97 Nm) and the front nuts to 50 ft. lbs. (67 Nm).
     
    Bell housing to engine bolts and torque to 35 ft. lbs. (47 Nm)
     

  4.  
  5. Remove the transmission support.

    Converter-to-flex plate bolts and tighten to 35 ft. lbs. (47 Nm)
     
    Fuel gauge wiring
     
    Starter
     
    Flywheel or torque converter cover
     
    Strut rods at the engine mountings, if used
     
    Exhaust pipes at the manifold
     
    Vacuum lines to the intake manifold
     
    Fuel line
     
    Engine wiring harness
     
    Power steering pump, if used
     
    Air conditioning compressor, if used
     
    Accelerator, cruise control and detent linkage
     
    Heater hoses
     
    Radiator and shroud
     
    Accessory drive belts
     
    Hood
     
    Negative battery cable
     

  6.  
  7. Refill coolant and engine oil.
  8.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Drain the engine oil.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Hood
     
    Air cleaner
     
    Accessory drive belt
     
    Fan
     
    Water pump pulley
     
    Radiator and shroud
     
    Heater hoses at the engine
     
    Accelerator, cruise control and detent linkage if used
     
    Air conditioning compressor, if used, and lay aside
     
    Power steering pump, if used, and lay aside
     
    Wiring from the engine
     
    Fuel line
     
    Vacuum lines from the intake manifold
     
    Exhaust pipes from the manifold
     
    Strut rods at the engine mountings, if used
     
    Flywheel or torque converter cover
     
    Wiring along the oil pan rail
     
    Starter
     
    Wire for the fuel gauge
     
    Converter to flex plate bolts, if equipped with automatic transmission
     

  8.  
  9. Support the transmission

    Bell housing to engine bolts
     
    Rear engine mounting to frame bolts and the front through bolts and the engine.
     

  10.  

To install:

  1. Lower the engine.
  2.  
  3. Install or connect the following:

    Engine mounting bolts. Torque the rear engine mounting to frame bolts or nuts to 45 ft. lbs. (54 Nm), the front through-bolts to 70 ft. lbs. (97 Nm) and the front nuts to 50 ft. lbs. (67 Nm)
     
    Bell housing to engine bolts and torque to 35 ft. lbs.
     

  4.  
  5. Remove the transmission support.

    Converter to flex bolts. Torque the bolts to 35 ft. lbs. (47 Nm)
     
    Fuel gauge wiring
     
    Starter
     
    Flywheel or torque converter cover
     
    Strut rods at the engine mountings, if used
     
    Exhaust pipes at the manifold
     
    Vacuum lines to the intake manifold
     
    Fuel line
     
    Engine wiring harness
     
    Power steering pump, if used
     
    Air conditioning compressor, if used
     
    Accelerator, cruise control and detent linkage
     
    Heater hoses
     
    Radiator and shroud
     
    Accessory drive belts
     
    Hood
     
    Negative battery cable
     

  6.  
  7. Refill coolant and engine oil.
  8.  

 
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