4.8L, 5.3L & 6.0L Engines Cylinder head removal for Chevrolet?

In this chapter the details are provided to replace Cylinder head.
The procedure Covers All U.S. And Canadian Models Of Chevrolet Avalanche, Express Van, and GM Savana.

In this chapter the details are there for 4.8L, 5.3L & 6.0L Engines Cylinder head removal.

The procedure is as follows:----

4.8L, 5.3L & 6.0L Engines
Left Side

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:
   
   NOTE

   The M11 cylinder head bolts are NOT reusable. Install NEW M11 cylinder head bolts during assembly.
   
   
   
   
   Negative battery cable

   Intake manifold

   Push rods

   Exhaust manifold(s)

   Alternator

   Alternator mounting bracket-to-cylinder head bolts

   Bolt behind the power steering pump

   Alternator mounting bracket and set it aside

   Oil level indicator tube-to-cylinder head bolt

   Oil level indicator tube

   Cylinder head from the engine

   Spark plugs
2. Remove the cylinder head bolts.
   
   NOTE

   After removal, place the cylinder head on two wood blocks to prevent damage.
3. Remove the gasket. Discard the gasket. Discard the M11 cylinder head bolts.

To install:

NOTE

Do not use any type sealant on the cylinder head gasket (unless specified). The cylinder head gaskets must be installed in the proper direction and position.

1. Clean the engine block cylinder head bolt holes (if required). Thread repair tool J 42385-107 may be used to clean the threads of old thread locking material.
2. Spray cleaner GM P/N 12346139, P/N 12377981, or equivalent into the hole.
3. Clean the cylinder head bolt holes with compressed air.
4. Check the cylinder head locating pins for proper installation.
   
   NOTE

   When properly installed, the tab on the left cylinder head gasket will be located left of center or closer to the front of the engine.
5. Install or connect the following:
   
   
   NEW left cylinder head gasket onto the locating pins

   Cylinder head onto the locating pins and the gasket

   NEW M11 cylinder head bolts.
6. Apply a 0.20 in. (5mm) band of threadlock GM P/N 12345382 or equivalent to the threads of the M8 cylinder head bolts.
   
   
   M8 cylinder head bolts

   M8 cylinder head bolts.
7. Tighten the cylinder head bolts as follows:
   1. M11 bolts (1-10) 1st pass: in sequence to 22 ft. lbs. (30 Nm).
   2. M11 bolts (1-10) 2nd pass: in sequence + 90 degrees.
   3. M11 bolts (1-10): + 70 degrees.
   4. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
8. Install or connect the following:
   
   
   Alternator mounting bracket. Tighten the four bolts to 37 ft. lbs. (50 Nm).

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

   Exhaust manifold(s)

   Pushrods

   Intake manifold

   Negative battery cable

Right Side

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:
   
   NOTE

   The M11 cylinder head bolts are NOT reusable. Install NEW M11 cylinder head bolts during reassembly.
   
   
   
   NOTE

   After removal, place the cylinder head on two wood blocks to prevent damage.
   
   
   
   
   Negative battery cable

   Coolant air bleed pipe

   Intake manifold

   Push rods

   Exhaust manifold(s)

   Alternator

   Alternator mounting bracket-to-cylinder head bolts

   Bolt behind the power steering pump

   Alternator mounting bracket and set it aside

   Bolt holding the oil level indicator tube to the right side cylinder head

   Oil level indicator tube

   Cylinder head(s) from the engine

   Spark plugs
   
   
   
   
   Cylinder head bolts
2. Remove the gasket. Discard the gasket. Discard the M11 cylinder head bolts.

To install:

NOTE

Do not use any type sealant on the cylinder head gasket (unless specified). The cylinder head gaskets must be installed in the proper direction and position.

1. Clean the engine block cylinder head bolt holes (if required). Thread repair tool J 42385-107 may be used to clean the threads of old thread locking material.
2. Spray cleaner GM P/N 12346139, P/N 12377981, or equivalent into the hole.
3. Clean the cylinder head bolt holes with compressed air.
4. Check the cylinder head locating pins for proper installation.
   
   NOTE

   When properly installed, the tab on the right cylinder head gasket will be located right of center or closer to the front of the engine.
5. Install or connect the following:
   
   
   NEW right cylinder head gasket onto the locating pins

   Cylinder head onto the locating pins and the gasket

   NEW M11 cylinder head bolts. Apply a 0.20 in. (5mm) band of threadlock GM P/N 12345382 or equivalent to the threads of the M8 cylinder head bolts.

   M8 cylinder head bolts.
6. Tighten the cylinder head bolts as follows:
   1. M11 bolts (1-10) 1st pass: in sequence to 22 ft. lbs. (30 Nm).
   2. M11 bolts (1-10) 2nd pass: in sequence + 90 degrees.
   3. M11 bolts (1-10): + 70 degrees.
   4. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts. 
      
      
      
      Fig. Locating tab-4.8L, 5.3L and 6.0L engines
      
      
      
      
      Fig. Cylinder head bolt tightening sequence-4.8L, 5.3L and 6.0L engines
7. Install or connect the following:
   
   
   Alternator

   Exhaust manifold(s)

   Pushrods

   Intake manifold

   Negative battery cable

These details will help.

Thanks.           

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Car repair guide?

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