Engine Removal For Chevy, GMC, Cadillac, Yukon?

Cadillac Escalade, Chevy Suburban 1500 & 2500, Chevy Tahoe, GMC Yukon, Yukon XL 1500 & 2500 (2006-2007), Yukon Denali and Yukon Denali XL (2005-2006).GMC Sierra, Chevrolet Silverado 2006-2007.

Engine replacing procedure is mentioned here for the above mentioned car models.

It also covers details in two sections.
First section covers Engine models
4.8L, 5.3L, 6.0L & 6.2L Engines
And second section covers engine model
8.1L Engine.

Refer details for both the section for complete procedure.
Engine replacing details and diagrams are as follows:----

4.8L, 5.3L, 6.0L & 6.2L Engines

CAUTION

Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures.

1. Remove or disconnect the following:
   
   
   Negative battery cable
   

   Coolant
   

   A/C refrigerant
   
2. Raise the hood to the servicing position. Move the hood hinge bolt to hold the hood in the servicing position.
   
   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. In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine.
   
   
   
   
   Upper and the lower radiator hoses from the engine
   

   Air cleaner duct from the engine
   

   A/C condenser mounting bolts
   

   Radiator support from the vehicle
   

   A/C compressor
   

   Coolant hose from the throttle body
   

   Heater hoses from the engine and the cowl
   

   Engine sight shield from the intake manifold
   

   Accelerator control cable mounting bracket from the intake manifold
   
   
   
   
   
   Accelerator control cable and the cruise control cable, if equipped, from the throttle shaft
   
3. Open the large electrical harness retainer. Remove one 10 mm nut in order to release the engine harness from the intake manifold.
4. Disconnect the electrical connectors from the following: 
   
   
   Eight injectors
   

   Idle Air Control (IAC) motor
   

   Throttle Position (TP) sensor
   

   Evaporative Emissions (EVAP) canister purge solenoid
   

   Manifold Absolute Pressure (MAP) sensor
   

   Camshaft Position (CMP) sensor 
   
   
   

   Fig. Ignition coil removal-4.8L, 5.3L, 6.0L and 6.2L engines
   
   
   
   
   Ground splice at the rear of the right side of the block
   

   Ground splice and the ground strap at the rear of the left side of the block
   

   Coolant Temperature (CTS) sensor
   

   Oil pressure sensor/switch
   

   Electrical connector from intake and disconnect from harness
   

   Junction block bracket from alternator bracket 
   
   
   

   Fig. Power steering pump removal-4.8L, 5.3L, 6.0L and 6.2L engines
5. Set the electrical harness aside.
6. Remove or disconnect the following: 
   
   
   EVAP canister purge solenoid vent tube from the solenoid by squeezing the retainer, then release the tube from the solenoid
   

   Battery negative cable from the engine block
   

   Drive belt
   

   Bolts holding the alternator mounting bracket to the cylinder head and block
   

   Bolt behind the power steering pump to engine block 
   
   
   

   Fig. Power steering mount bracket removal-4.8L, 5.3L, 6.0L and 6.2L engines
   
   
   
   
   Alternator mounting bracket. Position the bracket aside.
   

   Fuel pipes from the engine
   
7. Raise the vehicle.
   
   
   Steering linkage under body shield, if equipped
   

   Engine oil pan under body shield, if equipped
   

   Engine oil
   

   Starter motor
   
   

   

   

   Fig. Bell housing bolt removal-4.8L, 5.3L, 6.0L and 6.2L engines
8. Disconnect the engine wiring harness from the following components:
   
   
   Crankshaft Position (CKP) sensor
   

   Engine oil level sensor
   

   Block heater, if equipped
   

   Oil pan wiring harness
   
9. Reposition wiring from the lower engine area.
   
   
   Exhaust pipes from the exhaust manifolds
   

   Transmission cooler pipe retainer from the right side of the engine block, if equipped
   

   Torque converter shield from the engine
   

   Torque converter bolts
   

   Nut and the transmission oil level indicator tube from the bell housing stud
   

   Lower bell housing studs from the engine
   
10. Lower the vehicle.
    
    
    Remaining bell housing bolts
    

    Engine electrical harness aside
    

    Ignition coil(s)
    
11. Install an engine crane.
12. Install a floor jack or stands to transmission for support.
13. Remove the engine mount bolts.
    
    NOTE

    Use care while moving the engine assembly in order to avoid breaking the MAP sensor locating tabs. Broken MAP sensor tabs may result in decreased engine performance.
14. Remove the engine from the vehicle.
    
    
    

    

    Fig. Engine mount disconnect-4.8L, 5.3L, 6.0L and 6.2L engines

To install:

1. Install or connect the following:
   
   
   Engine to the vehicle
   

   Engine mount bolts
   

   Upper bell housing bolts
   
2. Remove transmission support apparatus.
3. Remove the lifting device.
4. Remove the lift brackets from both cylinder heads.
5. Install the ignition coil(s) and the spark plug wire(s).
6. Route the engine wiring harness to the lower right hand side of the engine.
7. Raise the vehicle.
8. Install or connect the following:
   
   
   Remaining bell housing bolts
   

   Torque converter bolts
   

   Torque converter shield
   

   Transmission oil level indicator tube and nut to bell housing stud
   

   A/C compressor
   

   Transmission cooler pipe retainer to right side of engine block
   

   Engine exhaust pipes to the exhaust manifolds
   
9. Reroute wiring to lower engine area and install bolt to oil pan.
10. Connect electrical connectors to the CKP sensor, the engine oil level sensor and the block heater, if equipped.
11. Install or connect the following:
    
    
    Starter motor
    

    Engine oil pan under body shield, if equipped
    

    Steering linkage under body shield
    
12. Lower the vehicle.
    
    
    Fuel pipes to the engine
    

    Alternator mounting bracket to the cylinder head using the nuts and the bolts. Tighten the bolts to 37 ft. lbs. (50 Nm).
    

    Bolt at the rear of the power steering pump to the engine block and tighten to 37 ft. lbs. (50 Nm)
    

    Alternator
    

    Drive belt
    

    Battery negative cable to the engine block
    

    EVAP canister purge solenoid to the intake manifold
    
13. Route the engine harness over the top of the engine. Attach the connectors for following components:
    
    
    Eight injectors
    

    IAC motor
    

    TP sensor
    

    EVAP canister purge solenoid.
    

    MAP sensor
    

    CMP sensor
    

    Ground splice at the rear of the right side of engine block
    

    Ground splice and the ground strap at the rear of the left side of engine block
    

    CTS sensor
    
14. 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. In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine.
    
    
    
    
    Nut to the engine wiring harness bracket and tighten to 89 inch lbs. (10 Nm)
    
    
    
    
    
    NEW accelerator control cable
    

    Cruise control cable, if equipped, to the throttle shaft
    

    Bolts for the accelerator control cable mounting bracket and tighten to 89 inch lbs. (10 Nm)
    

    Engine sight shield to the intake manifold
    

    Heater hoses to the cowl and the engine
    

    Coolant hose to the throttle body
    

    Radiator support in the vehicle
    

    A/C condenser mounting bolts
    

    Air cleaner duct
    

    Lower radiator hoses to the engine
    
15. Lower the hood.
16. Fill the engine with oil.
17. Fill the engine with coolant.
18. Connect the negative battery cable.

CAUTION

Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures.

1. Remove or disconnect the following:
   
   
   Negative battery cable
   

   Coolant
   

   Engine oil
   

   A/C refrigerant
   
2. Raise the hood to the servicing position. Move the hood hinge bolt to hold the hood in the servicing position.
   
   
   Hood latch and radiator support
   

   Intake manifold
   

   Upper and the lower radiator hoses from the engine
   

   Heater hoses from the engine and the cowl
   

   Harness connectors from the oil pressure sensor and lifter oil manifold
   

   Ground strap from the left cylinder head
   

   Negative battery cable and harness ground from the right cylinder head
   
3. Raise and safely support the vehicle.
   
   
   Harness grounds and clips from the engine block
   

   Transmission oil cooler line clip bolt form the oil pan
   

   Starter
   

   Harness connectors for the knock sensors, CMP sensor, A/C pressure sensor, CKP sensor and oil level sensor
   

   Block heater connector, if equipped
   
4. Lower the vehicle.
   
   
   Power steering pump engine block bolt
   

   Alternator bracket assembly and set aside with the power steering pump
   

   Ignition coils to allow attachment of the engine lift brackets
   

   Transmission dipstick tube nut and tube
   
5. Install engine lift brackets J41798 or equivalent. Tighten the M8 bolts to 18 ft. lbs. (25 Nm) and the M10 bolts to 37 ft. lbs. (50 Nm).
   
   
   Engine mount bolts
   
6. Raise and safely support the vehicle.
   
   
   Engine shield or skid plate
   

   Exhaust pipes from the exhaust manifolds and catalytic converters
   

   Torque converter bolts
   

   Transmission mounting bolts
   
7. Lower the vehicle.
8. Install an engine crane.
9. Install a floor jack or stands to transmission for support.
10. Remove the engine from the vehicle.

To install:

1. Position the engine in the vehicle. Make sure the engine is properly aligned and mated with the transmission, then remove the crane.
2. Install the engine mount bolts; start with the middle bolt then the outer bolts. Tighten to 48 ft. lbs. (65 Nm).
3. Install the transmission bolts. Tighten to 37 ft. lbs. (50 Nm).
4. Align the torque converter bolt holes and install the bolts. Tighten to 47 ft. lbs. (63 Nm) except on 4L80E transmissions. On the 4L80E, tighten the bolts to 44 ft. lbs. (60 Nm).
5. The remaining installation is the reverse of removal.

8.1L Engine

1. Raise the hood to the servicing position. Move the hood hinge bolt to hold the hood in the servicing position.
2. Release the fuel system pressure.
3. Remove or disconnect the following:
   
   
   Negative, then positive battery cables
   

   Coolant
   

   A/C refrigerant
   

   Engine oil cooler lines from the engine block
   

   Transmission-to-engine bolts
   

   Clutch pressure plate bolts, if equipped
   

   Torque converter bolts, if equipped
   

   Catalytic converter
   

   Exhaust manifold pipe
   

   Hoses from power steering pump, then plug the lines and ports
   

   Starter motor
   
   
   
   
   
4. Raise the vehicle.
   
   
   Engine electrical harness and tie aside
   

   Alternator
   

   Ground cable bolt from engine block
   

   Exhaust Gas Recirculation (EGR) valve adapter
   

   Vacuum lines (tag before removal)
   

   Throttle Actuator Control (TAC) module electrical connector
   
5. Install Engine Lift Brackets part No. J 36857, or equivalent, to the rear of the right cylinder head and the front of the left cylinder head.
   
   
   

   

   Fig. Install suitable lift brackets to the rear of the right head and the front of the left head
6. Install the attaching bolt and washer. Use part No. 9428217 with 1560963. Tighten the bolts to 30 ft. lbs. (40 Nm).
7. Remove or disconnect the following:
   
   
   Engine mount heat shield bolt and shields
   

   Engine mount-to-engine mount bracket bolts
   

   Engine from the vehicle, using a suitable lifting device. Place on a suitable stand.
   

   A/C compressor/power steering pump bracket from the cylinder head
   

   Lift brackets from the cylinder head
   

To install:

1. Install Engine Lift Brackets part No. J 36857, or equivalent, to the rear of the right cylinder head and the front of the left cylinder head.
2. Install the attaching bolt and washer. Use part No. 9428217 with 1560963. Tighten the bolts to 30 ft. lbs. (40 Nm).
3. Install or connect the following:
   
   
   A/C compressor/power steering mounting bracket. Tighten the bolts and nut to 37 ft. lbs. (50 Nm).
   

   Alternator bracket
   

   Engine into the vehicle
   

   Engine mount-to-engine mount bracket bolts
   

   Engine mount heat shield and bolts
   
4. Remove the lift hooks from the cylinder heads, then raise the vehicle.
   
   
   Engine oil cooler lines
   

   Transmission-to-engine bolts
   

   Clutch pressure plate bolts, if equipped
   

   Torque converter bolts, if equipped
   

   Catalytic converter
   

   Exhaust manifold pipe
   

   Hoses to the power steering pump
   

   Starter motor
   
5. Lower the vehicle.
   
   
   Engine electrical harness. Make sure the harness is properly routed.
   

   Alternator
   

   Ground cable bolt to engine block and tighten to 12 ft. lbs. (16 Nm)
   

   EGR valve adapter
   

   Vacuum lines, as tagged during removal
   

   TAC module electrical connector
   

   Radiator
   

   A/C compressor
   

   Fuel feed and return lines
   

   Ignition coils
   

   Positive, then negative battery cables
   

   Air cleaner outlet duct and secure with the clamp
   
6. Lower the hood from the service position.
7. Properly recharge the A/C system.
8. Fill the engine with oil.
9. Fill the engine with coolant.
10. Perform the Crankshaft Position (CKP) sensor variation learn procedure:
    1. Install a suitable scan tool and check for Diagnostic Trouble Codes (DTCs). If any DTCs, other than P1336 are set, resolve those codes first, before proceeding with this procedure.
    2. With the scan tool, select the crankshaft position variation learn procedure.
    3. Observe the fuel cut-off for the 8.1L engine.
    4. The scan tool will instruct you to perform certain steps, make sure you follow all directions given by the scan tool exactly.
    5. Enable the crankshaft position system variation learn procedure.
       
       NOTE

       While the learn procedure is in progress, release the throttle immediately when the engine started to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.
    6. Slowly increase the engine speed to the RPM that you observed.
    7. Immediately release the throttle when fuel cut-out is reached.
    8. The scan tool displays: Learn Status: Learned this ignition. If the scan tool does NOT display this message and not other DTCs set, you must perform further troubleshooting.
    9. Turn the ignition OFF for 30 seconds after the learn procedure has been completed successfully.
11. Start and run the engine, then check for leaks.

These details will help.

Thanks.           

FOR MORE HELP GO TO: ---

Car repair guide?

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