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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) >> Off-Vehicle Repair Instructions (Part 2) >> Crankshaft and Bearings Cleaning and Inspection >> Crankshaft Bearing Selection Grade Chart Method

Crankshaft Bearing Selection Grade Chart Method

WARNING: This page is about a different variant/trim than selected.
  1. The cylinder block grade is indicated on the right lower portion of the cylinder block.
    Fig 1: View Of Cylinder Block Grade
    GM663785Courtesy of GENERAL MOTORS CORP.
  2. The crankshaft journal grade is indicated on the number 1 crankshaft counterweight.
    Fig 2: View of Crankshaft Journal Grade
    GM663786Courtesy of GENERAL MOTORS CORP.
  3. Match the cylinder block grade and the crankshaft journal grade, refer to Crankshaft Bearings Selection Specifications .
  4. From the Crankshaft Bearing Grade chart, determine which bearing grade (color code) is required.
  5. Verify the crankshaft bearing clearance using the plastic gage method.
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