Cylinder Head Replacing for Escalade,Tahoe,Yukon And GMC?

The procedure mentioned here is for following car models
Cadillac Escalade, GMC Suburban 1500 & 2500, Chevrolet Tahoe, Yukon, Yukon XL 1500 & 2500 (2006-2007), Yukon Denali and Yukon Denali XL (2005-2006).GMC Sierra, Chevrolet Silverado 2006-2007.

The Procedure is for
4.8L, 5.3L, 6.0L & 6.2L Engines.
AND 
8.1L Engine models.

Cylinder Head

REMOVAL & INSTALLATION

4.8L, 5.3L, 6.0L & 6.2L 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, 6.0L and 6.2L engines
      
      
      
      
      Fig. Cylinder head bolt tightening sequence-4.8L, 5.3L, 6.0L and 6.2L engines
7. Install or connect the following:
   
   
   Alternator
   

   Exhaust manifold(s)
   

   Pushrods
   

   Intake manifold
   

   Negative battery cable
   

Cylinder Head
REMOVAL & INSTALLATION

8.1L Engine

Left Side

1. Drain the cooling system.
2. Remove or disconnect the following:
   
   
   Negative battery cable
   

   Water crossover
   

   Intake manifold
   

   Valve cover
   

   Rocker arms and pushrods, keeping them in order for installation
   

   Engine harness ground bolts
   
3. Reposition the engine harness grounds and ground straps from the cylinder head.
   
   NOTE

   The cylinder head bolts must be replaced for installation.
   
   
   
   
   Exhaust manifold
   

   Cylinder head bolts, then discard
   
   
   
   
   
   Cylinder head. Place the head on 2 wood blocks to protect the sealing surfaces while it is removed.
   

To install:

NOTE

The cylinder head should be cleaned and inspected for warpage or damage before installation.

1. Thoroughly clean the mating surfaces of the head and block. Clean the bolt holes thoroughly.
   
   NOTE

   If a composition gasket is used, do not use sealer.
2. Align the cylinder head gasket locating marks to face up. Make sure that the gasket tabs are located of the No. 1 and 2 cylinder for proper installation.
3. Install or connect the following:
   
   NOTE

   The long bolts are used in locations 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, and 17. The medium length bolts are used in locations 15 and 18. The short bolts are used in locations 4, 5, 12, and 13.
   
   
   
   
   New cylinder head gasket
   

   Cylinder head
   

   Sealer to the threads of new cylinder head bolts, if not pre-applied
   
4. Tighten the head bolts, in sequence, in 4 stages, as follows:
   1. Step 1: 22 ft. lbs. (30 Nm).
5. Step 2: 22 ft. lbs. (30 Nm)
   1. Step 3: Additional 120 degrees using a torque angle meter.
   2. Step 4: Torque bolt numbers. 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16 and 17 an additional 60 degrees.
   3. Tighten bolts 15 and 18 an additional 45 degrees, and bolt numbers 4, 5, 12 and 13 an additional 30 degrees. 
      
      
      
      Fig. Cylinder head bolt tightening sequence-8.1L engines
6. Install or connect the following:
   
   
   Exhaust manifold
   

   Water crossover
   

   Engine harness grounds and ground strap
   

   Rocker arms and pushrods
   

   Valve cover
   

   Intake manifold
   
7. Connect the battery cable and refill the cooling system.

Right Side

1. Drain the cooling system.
2. Remove or disconnect the following:
   
   NOTE

   The cylinder head bolts must be replaced for installation.
   
   
   
   
   Negative battery cable
   

   Intake manifold
   

   Valve cover
   

   Rocker arms and pushrods, keeping them in order for installation
   

   Engine Coolant Temperature (ECT) sensor clip from the bracket
   

   ECT sensor
   

   ECT sensor bracket bolt and bracket
   

   Heater inlet and outlet hoses from the hose bracket
   

   Water crossover
   

   Exhaust manifold
   

   Cylinder head bolts, then discard
   
   
   
   
   
   Cylinder head. Place the head on 2 wood blocks to protect the sealing surfaces while it is removed.
   

To install:

NOTE

The cylinder head should be cleaned and inspected for warpage or damage before installation.

1. Thoroughly clean the mating surfaces of the head and block. Clean the bolt holes thoroughly.
   
   NOTE

   If a composition gasket is used, do not use sealer.
2. Align the cylinder head gasket locating marks to face up. Make sure that the gasket tabs are located of the no. 1 and 2 cylinder for proper installation.
3. Install or connect the following:
   
   NOTE

   The long bolts are used in locations 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, and 17. The medium length bolts are used in locations 15 and 18. The short bolts are used in locations 4, 5, 12, and 13.
   
   
   
   
   New cylinder head gasket
   

   Cylinder head
   

   Sealer to the threads of new cylinder head bolts, if not pre-applied
   
4. Tighten the head bolts, in sequence, in 4 stages, as follows:
   1. Step 1: 22 ft. lbs. (30 Nm).
5. Step 2: 22 ft. lbs. (30 Nm)
   1. Step 3: Additional 120 degrees using a torque angle meter.
   2. Step 4: Torque bolt numbers. 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16 and 17 an additional 60 degrees.
   3. Tighten bolts 15 and 18 an additional 45 degrees, and bolt numbers 4, 5, 12 and 13 an additional 30 degrees.
6. Install or connect the following:
   
   
   Exhaust manifold
   

   Water crossover
   

   Heater hose bracket and bolts. Tighten the bolts to 37 ft. lbs. (50 Nm).
   

   ECT sensor bracket and bolt. Tighten to 37 ft. lbs. (50 Nm).
   

   ECT sensor
   

   ECT sensor clip
   

   Rocker arms and pushrods
   

   Valve cover
   

   Intake manifold
   
7. Connect the battery cable and refill the cooling system.

These details will help.

Thanks.           

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Car repair guide?

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