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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) >> Off-Vehicle Repair Instructions (Part 2) >> Water Pump Cleaning and Inspection

Water Pump Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Remove the O-ring from the water pump and discard.
  2. Remove the water pump to water pump housing bolts.
  3. Remove the water pump from the water pump housing.
  4. Remove the O-ring from the water pump housing and discard.
    Fig 1: View Of Water Pump, Housing & O-Ring
    GM663772Courtesy of GENERAL MOTORS CORP.
  5. Clean the water pump assembly.
  6. Clean the water pump mating surfaces.
  7. Inspect the water pump gear for damage.
    Fig 2: Locating Water Pump Inspection Areas
    GM663773Courtesy of GENERAL MOTORS CORP.
  8. Inspect the water pump mating surfaces for damage.
  9. Inspect the water pump shaft for looseness.
  10. Inspect the water pump assembly for damage.
  11. Replace the water pump if any damage is found.
  12. Install a new O-ring to the water pump housing.
    Fig 3: View Of Water Pump, Housing & O-Ring
    GM663772Courtesy of GENERAL MOTORS CORP.
  13. Lubricate the O-ring with engine coolant.
  14. Install the water pump to the water pump housing.
    15. NOTE: Refer to FASTENER NOTICE .
  15. Install the water pump to water pump housing bolts.

    Tighten:  Tighten the water pump to water pump housing bolts to 21 N.m (15 lb ft).

  16. Install a new O-ring to the water pump.
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