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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 53 (Transfer Case - NVG 246-NP8 - Overhaul) >> Repair Instructions >> Cleaning and Inspection >> Front Output Shaft

Front Output Shaft

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  1. Clean the front output shaft in cleaning solvent and air dry.
  2. Inspect the teeth on the speed sensor reluctor wheel (3) for damage.
    Fig 1: Inspecting Front Output Shaft & Speed Sensor Reluctor
    GM801263Courtesy of GENERAL MOTORS CORP.
  3. Replace the speed sensor reluctor wheel if it is damaged. Refer to Transfer Case Disassemble  and Transfer Case Assemble .
  4. Inspect the front output shaft rear bearing race (1) for the following conditions:
    • Scoring
    • Pitting
    • Brinelling
    • Excessive wear
  5. Inspect the front output shaft splines (2) for damage.
  6. Replace the front output shaft if any of the above conditions are found.