Engine Removal on Silverado and Sierra?

The procedure mentioned here is for GMC Sierra, Chevrolet Silverado car models.

The Engine removal procedure for 4.3L.

Removal & Installation

4.3L Engine

1. Remove or disconnect the following: 
   
   
   Battery negative cable

   Coolant

   A/C refrigerant, if equipped

   Oil pan skid plate

   Engine shield 
   
   
   

   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 
   
   
   

   Fig. Hood in the service position
2. Move the hood hinge bolts to hold the hood in the service position.
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.
   
   
   
   
   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
4. 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
5. Attach the engine crane to the left front and right rear intake manifold mounting bolts.
6. Remove the engine motor mount to frame bracket bolts.
7. Support the transmission with a suitable jack.
8. Remove the engine.

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. Remove the lifting device.
3. 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. Second pass: 106 inch lbs. (12 Nm)
   3. Final pass: 11 ft. lbs. (15 Nm)
4. Loosely install one transmission to engine bolt. Remove the support jack from under the transmission.
5. 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. Tighten the EGR valve inlet pipe exhaust nut to 22 ft. lbs. (30 Nm).
   3. Tighten the EGR valve inlet pipe clamp bolt to 18 ft. lbs. (25 Nm).
6. Install the water outlet.
7. Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud.
8. Position the power steering pump rear bracket on the studs.
9. 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
10. 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).
11. Position the engine wiring harness bracket on the EVAP purge canister solenoid valve stud and install the nut.
12. 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).
13. 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).
14. Position the battery positive and negative cables. Do not connect the negative battery cable to the battery.
15. 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
16. Move the hood hinge bolts from the service position to the normal operating position.
17. Raise the vehicle.
18. 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
19. Lower the vehicle.
    
    
    Battery negative cable

    Engine oil

    Coolant
20. Recharge the A/C system.

These details will help.

Thanks.           

FOR MORE HELP GO TO: ---

Car repair guide?

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