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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical (Repair Instructions -- 1 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the generator bracket. Refer to Generator Replacement (4.8L, 5.3L, and 6.0L Engines) in Engine Electrical.
  2. Remove the intake manifold. Refer to Intake Manifold Replacement .
  3. Remove the coolant air bleed pipe. Refer to Coolant Air Bleed Pipe Assembly Replacement (4.8L, 5.3L, and 6.0L Engines) in Engine Cooling.
  4. Remove the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left (4.8L, 5.3L, and 6.0L Engines) in Engine Exhaust.
  5. Remove the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
    IMPORTANT: The cylinder head bolts are NOT reusable.
  6. Remove the cylinder head bolts (1, 2, 3).
    7. Fig 1: Removing Left Cylinder Head Bolts
    GM832957Courtesy of GENERAL MOTORS CORP.
    NOTE: After removal, place the cylinder head on two wood blocks to prevent damage to the sealing surfaces.
  7. Remove the cylinder head.
    8. Fig 2: View Of Left Cylinder Head
    GM832958Courtesy of GENERAL MOTORS CORP.
  8. Remove and discard the cylinder head gasket.
    9. Fig 3: View Of Left Cylinder Head Gasket
    GM832962Courtesy of GENERAL MOTORS CORP.
  9. If required, clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection .
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