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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 1.2L (LIH)) >> Repair Instructions >> Camshaft Cover Cleaning and Inspection >> Camshaft Inspection Procedure

Camshaft Inspection Procedure

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  1. GM5376577Courtesy of GENERAL MOTORS COMPANY

    Inspect the camshaft oil feed holes (3) for dirt, debris or blockage.

  2. Inspect the threaded holes (4) for damage.
  3. Inspect the camshaft lobes (1) and journals (2) for the following conditions:
    • Excessive scoring or pitting
    • Discoloration from overheating
    • Deformation from excessive wear, especially the camshaft lobes
  4. If any of the conditions above exist on the camshaft, replace the camshaft.