How to Replace 3.8L Engine on Buick LaCrosse?

The details to Replace 3.8L engine are as follows.
Follow the details mentioned below.
Buick Lacrosse Engine
Removal & Installation

3.8L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Disconnect the negative battery cable.
3. Remove the hood.
4. Relieve the fuel system pressure.
5. Drain the coolant system and crankcase.
6. Remove or disconnect the following:
   
   NOTE

   Always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.
   
   
   
   
   Negative cable

   Fuel injector sight shield

   Vacuum brake booster hose from the vacuum connections

   Fuel feed and return lines from the fuel rail

   Evaporative emission canister purge valve

   Cruise control cable from the throttle body bracket and lever

   Electrical connector from the cruise control module

   Cruise control module from the mounting studs
   
   
   
   
   Accelerator control cable

   Accessory drive belt

   Bolt securing both the battery negative cable and the engine harness ground lead to the engine block
7. Disconnect the wiring harness connectors from the following components:
   
   
   A/C compressor clutch

   A/C pressure sensor

   Knock Sensor (KS)

   Engine coolant block heater

   Oil level sensor
8. Remove or disconnect the following:
   
   
   Wiring harness from the harness clip at the rear of the A/C compressor

   Torque converter cover

   Starter motor

   Bolts securing the flywheel to the torque converter
9. Disconnect then secure the following wiring harness electrical connectors to the cowl panel:
   
   
   Knock Sensor (KS) number 2 which can be found behind the right exhaust manifold

   Oil pressure sensor

   Vehicle Speed Sensor (VSS)
10. Remove or disconnect the following:
    
    
    Bolts securing the transaxle brace to the transaxle

    Nuts attaching the exhaust manifold pipe to the right exhaust manifold

    Exhaust manifold pipe from the right exhaust manifold studs, allowing it to rest on top of the power steering gear heat shield

    Exhaust manifold pipe gasket and discard the gasket

    Right wheelhouse extension

    Font A/C compressor mounting nuts

    Rear A/C compressor mounting bolt

    Compressor off of the mounting studs and rest on top of the engine frame

    Bolt securing the Powertrain Control Module (PCM) ground located at the left front cylinder head
11. Disconnect the wiring harness electrical connectors from the following components on the left side of the engine:
    
    
    Fuel injectors

    Ignition harness

    Boost control solenoid (VIN I only)

    Engine Coolant Temperature (ECT) sensor

    Throttle Position (TP) sensor

    Idle Air Control (IAC) valve

    Mass Air Flow (MAF) sensor
12. Disconnect the wiring harness connectors from the following components on the right side of the engine:
    
    
    Fuel injectors

    Exhaust Gas Recirculation (EGR) valve

    Manifold Absolute Pressure (MAP) sensor

    Heated Oxygen (O ₂ S) sensor

    AIR solenoid, if equipped

    Alternator
13. Remove or disconnect the following:
    
    
    Alternator

    Air cleaner intake duct
14. Attach an engine support fixture.
    
    
    Front power steering pump mounting bolts

    Side power steering pump mounting bolt and piston the power steering pump against the cowl, allowing it to rest on top of the transaxle housing

    Right engine mount bracket

    Right lower engine to transaxle mounting bolt

    Coolant and heater hoses
15. Use a block of wood between a floor jack and the transaxle, support the transaxle at the pan.
16. Remove the engine support fixture.
17. Attach an engine lift chain to the engine lift brackets and attach to an engine lift device.
18. Remove all remaining engine to transaxle bolts
19. Remove the engine from the vehicle.

To install:

1. Installation is the reverse of removal, please note the following torques:
   
   
   5 upper engine to transaxle mounting bolts to 55 ft. lbs. (75 Nm)

   Right lower engine to transaxle mounting bolt to 55 ft. lbs. (75 Nm)

   Power steering pump bolts to 20 ft. lbs. (27 Nm)

   Bolt attaching the PCM ground to the left front cylinder head and tighten to 37 ft. lbs. (50 Nm)

   A/C compressor bolts 37 ft. lbs. (50 Nm)

   Transaxle brace bolts to 48 ft. lbs.(65 Nm)

   Flywheel to torque converter bolts to 46 ft. lbs. (63 Nm)
2. Refill the crankcase.
3. Refill and bleed the engine cooling system.
4. Start the engine and check for leaks.
5. Road test the vehicle and check operation.

These details will help.

Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html