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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 963 (Engine Mechanical - 6.6L (4 Of 5)) >> Off-Vehicle Repair Instructions (3 Of 4) >> Exhaust Manifold Cleaning and Inspection

Exhaust Manifold Cleaning and Inspection

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Exhaust Manifold Inspection Areas
    GM663760Courtesy of GENERAL MOTORS CORP.
  1. Clean the exhaust manifold.
  2. Clean the exhaust manifold mating surfaces.
  3. Inspect the exhaust manifold for cracks.
  4. Inspect the exhaust manifold mating surfaces for damage.
  5. Replace the exhaust manifold if any damage is found.
    6. Fig 2: Measuring Exhaust Manifold Flange For Warpage
    GM663761Courtesy of GENERAL MOTORS CORP.
  6. Measure the exhaust manifold flange for warpage with feeler gauge and a straightedge. Replace the exhaust manifold if the warpage is more than 0.3 mm (0.0118 in).
  7. Install the exhaust manifold heat shield.
    8. NOTE: Refer to Fastener Notice .
  8. Install the exhaust manifold heat shield bolts.

    Tighten:  Tighten the exhaust manifold heat shield bolts to 8 N.m (71 lb in).

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