Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 2008 >> LaCrosse V6-3.6L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Service and Repair >> Removal and Replacement >> Engine Replacement >> Installation Procedure

Installation Procedure



Engine Replacement

Special Tools
* EN 46114 Engine Lift Brackets
* J 42640 Steering Column Anti-Rotation Pin

Installation Procedure

1. Install the engine mount brackets with the engine mounts.
2. Use a floor crane in order to install the engine to the frame.
3. Install the ECM with the ECM bracket. Refer to Engine Control Module Replacement (Service and Repair).
4. Install the water outlet. Refer to Water Outlet Removal (Overhaul).
5. Install the block heater. Refer to Coolant Heater Replacement (LY7) (Coolant Heater Replacement (LY7)).
6. Install the flywheel. Refer to Engine Flywheel Installation (Overhaul).
7. Install the intake manifold. Refer to Intake Manifold Installation (Overhaul).
8. Install the crankshaft balancer. Refer to Crankshaft Balancer Installation (Overhaul).
9. Install the right exhaust manifold. Refer to Exhaust Manifold Installation - Right Side (Overhaul).
10. Install the oil filter adapter. Refer to Oil Filter Adapter Installation (Overhaul).
11. Install the left exhaust manifold. Refer to Exhaust Manifold Installation - Left Side (Overhaul).
12. Install the oil level indicator. Refer to Oil Level Indicator and Tube Installation (Overhaul).
13. Install the generator and the generator bracket. Refer to Generator Replacement (LY7) (Generator Replacement (LY7)).
14. Install the power steering pump. Refer to Power Steering Pump Replacement (LY7) (Service and Repair).
15. Install the A/C compressor. Refer to Compressor Replacement (LY7) (Service and Repair).
16. Install the idler pulley. Refer to Drive Belt Idler Pulley Installation (Overhaul).
17. Install the drive belt tensioner. Refer to Drive Belt Tensioner Installation (Overhaul) and Drive Belt Replacement (Service and Repair).
18. Install the drive belts. Refer to Drive Belt Replacement (Service and Repair).
19. Install the transmission-to-engine and flywheel-to-torque convertor bolts. Refer to Transmission Replacement (Removal and Replacement).
20. Install the starter motor. Refer to Starter Motor Replacement (LY7) (Service and Repair).
21. Remove the EN 46114 from the engine.
22. Connect the radiator hoses to the water outlet housing and the coolant inlet pipe. Refer to Radiator Inlet Hose Replacement (LY7) (Service and Repair) and Radiator Outlet Hose Replacement (LY7) (Service and Repair).
23. Install the TOC pipes to the engine, radiator and the transmission. Refer to Automatic Transmission Oil Cooler Hose Replacement (Service and Repair).
24. Install the engine wiring harness and related components.
25. Install the HO2S connectors.
26. Install the thermostat housing with the heater pipes, heater hoses and surge tank outlet hose. Refer to Engine Coolant Thermostat Housing Replacement (LY7) (Service and Repair).
27. Install the catalytic converters with the oxygen sensors. Refer to Catalytic Converter Replacement (Service and Repair).




28. Remove the cap or plug from the fuel line.
29. Install the fuel lines to the fuel rail and the EVAP purge solenoid. Refer to Metal Collar Quick Connect Fitting Service (Metal Collar Quick Connect Fitting Service).
30. Install the purge line (3) to the purge solenoid.
31. Connect the ECM electrical connector. Refer to Engine Control Module Replacement (Service and Repair).

Important: Ensure that all the hoses, wires, pipes and shock modules clear the vehicle during the installation process.


32. With the aid of an assistant, raise the table and/or lift the vehicle to install the engine, transmission, front frame and front suspension assembly to the vehicle.




33. Install the front frame bolts.
34. Install the transmission support to underbody bolts. Refer to Transmission Brace Replacement (Transmission Brace Replacement).
35. Remove the powertrain lift/support table.




36. Install the right and left shock module upper mounting bolts. Refer to Strut Assembly Replacement (Strut Assembly Replacement).
37. Connect the transmission shift linkage to the transmission. Refer to Range Selector Lever Cable Replacement (Service and Repair).
38. Install the intermediate steering shaft. Refer to Intermediate Steering Shaft Replacement (Intermediate Steering Shaft Replacement).
39. Install the front tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation (Service and Repair).
40. Install the front brake pipes and retainers to the underbody.
41. Connect the rear brake pipes (two center pipes) to the BPMV. Refer to Electronic Brake Control Module Replacement (Service and Repair).
42. Connect the radiator side air baffles to the radiator.
43. Install the air deflector.




44. Install the master cylinder.
45. Connect the engine harness electrical connector at the frame.





Notice: Refer to Fastener Notice (Fastener Notice).

46. Install the ground wire and bolt to the frame.

Tighten the engine harness ground wire to longitudinal rail bolt to 10 N.m (89 lb in).

47. Connect the wiring harness to the TCM. Refer to Transmission Control Module Replacement (3.6L) (Service and Repair).
48. Connect the engine module wiring harness connectors.
49. Connect and lock the I/P electrical connector.
50. Connect the mass air flow sensor electrical connector.
51. Connect the brake fluid level switch electrical connector from the master cylinder.




52. Connect the brake booster vacuum hose (1) to the brake booster (2).




53. Connect the purge line (3) to the purge solenoid.
54. Connect the fuel pipe (2) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service (Metal Collar Quick Connect Fitting Service).
55. Connect the heater hoses to the heater core. Refer to Heater Inlet Hose Replacement (LY7) (Heater Inlet Hose Replacement (LY7)) and Heater Outlet Hose Replacement (LY7) (Heater Outlet Hose Replacement (LY7)).
56. Connect the overflow hose to the coolant overflow tank.
57. Connect the air conditioning pressure switch electrical connector and the liquid line to the evaporator.
58. Connect the air conditioning suction hose to the evaporator and install the suction hose bracket to the shock tower.
59. Install the air cleaner duct. Refer to Air Cleaner Inlet Duct Replacement (Service and Repair).
60. Install the battery. Refer to Battery Replacement (LY7) (Battery Replacement).
61. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (Service and Repair).




62. Connect the battery positive cable to the battery and the underhood electrical center. Refer to Battery Positive Cable Replacement (LY7) (Service and Repair).
63. Connect the battery negative cable from the battery and the body. Refer to Battery Negative Cable Replacement (LY7) (Service and Repair).




64. Remove the J 42640 from the steering column.
65. Fill the cooling system. Refer to Cooling System Draining and Filling (L26, LY7 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LY7 Static Fill) (Service and Repair).
66. Charge the air conditioning system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
67. Bleed the brake system. Refer to Antilock Brake System Automated Bleed Procedure (Service and Repair).

pro multis · About Operation CHARM