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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 5.3L) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement - Right Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
CAUTION: Wear safety glasses in order to avoid eye damage.
NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
IMPORTANT:
  • Do not reuse the cylinder head bolts. Install NEW cylinder head bolts during assembly.
  • Do not use any type of sealant on the cylinder head gasket (unless specified).
  • The cylinder head gaskets must be installed in the proper direction and position.
  1. Clean the cylinder head bolt holes, if required. J 42385-100  can be used to clean the threads of old threadlocking material. See Special Tools .
  2. Clean the engine block bolt holes, if required. J 42385-200  can be used to clean the threads of old threadlocking material. See Special Tools .
  3. Use spray cleaner to clean out the hole.
  4. Clean the cylinder head bolt holes with compressed air.
  5. Check the cylinder head locating pins for proper installation.
    6. Fig 1: View Of Cylinder Head Gasket
    GM1655022Courtesy of GENERAL MOTORS CORP.
  6. Inspect the displacement markings on the cylinder head gasket, for the proper usage.
    7. Fig 2: View Of Cylinder Head Gasket
    GM1411947Courtesy of GENERAL MOTORS CORP.
  7. Install the NEW cylinder head gasket (217) onto the locating pins.
    8. Fig 3: View Of Cylinder Head & Bolt (Right)
    GM1411945Courtesy of GENERAL MOTORS CORP.
  8. Install the cylinder head (218) onto the locating pins.
  9. Install the NEW cylinder head bolts (220, 221).
    10. Fig 4: Identifying Cylinder Head Bolt Tightening Sequence
    GM260150Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  10. Tighten the cylinder head bolts.

    Tighten: 

    1. Tighten the M11 bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft).
    2. Tighten the M11 bolts (1-10) a second pass in sequence to 90 degrees using J 45059  .
    3. Tighten the M11 bolts (1-10) a final pass in sequence to 70 degrees using J 45059  .
    4. Tighten the M8 bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

  11. Install the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  12. Install the right exhaust manifold. Refer to Exhaust Manifold Installation - Right Side .
  13. Install the generator bracket. Refer to Generator Bracket Replacement (LS4) .
  14. Install the coolant air bleed pipe. Refer to Coolant Air Bleed Pipe Assembly Replacement .
  15. Install the intake manifold. Refer to Intake Manifold Replacement .
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