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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (1 Of 3)) >> Off-Vehicle Repair Instructions (Part 1) >> Thermostat Housing Removal

Thermostat Housing Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove the main engine electrical harness connector hold down bolts.
    Fig 1: View Of Main Engine Electrical Harness Connector Bolts
    GM1334916Courtesy of GENERAL MOTORS CORP.
  2. Remove the main engine electrical harness connectors.
  3. Disconnect and remove the barometric sensor.
    Fig 2: View Of Barometric Pressure Sensor Electrical Connector
    GM1334921Courtesy of GENERAL MOTORS CORP.
  4. Disconnect and remove the turbocharger vane position sensor.
    Fig 3: View Of Turbocharger Vane Position Sensor And Electrical Connector
    GM1334926Courtesy of GENERAL MOTORS CORP.
  5. Remove the main electrical harness bracket bolts.
    Fig 4: View Of Main Electrical Connector Harness Bracket & Bolts
    GM1334948Courtesy of GENERAL MOTORS CORP.
  6. Remove the main electrical harness bracket.
  7. Disconnect the turbocharger coolant inlet hose.
    Fig 5: View Of Turbocharger Inlet Coolant Hose At Turbocharger Coolant Bypass
    GM1335386Courtesy of GENERAL MOTORS CORP.
  8. Remove the electrical harness bracket bolt.
    Fig 6: View Of Electrical Harness Bracket Bolt
    GM1335388Courtesy of GENERAL MOTORS CORP.
  9. Remove the electrical harness bracket.
  10. Remove the water outlet bolts.
    Fig 7: View Of Water Outlet Bolts
    GM1335391Courtesy of GENERAL MOTORS CORP.
  11. Remove the water outlet.
    Fig 8: View Of Water Outlet
    GM1335393Courtesy of GENERAL MOTORS CORP.
  12. Remove the oil fill tube bolts.
    Fig 9: View Of Oil Filler Tube Bolts
    GM1335397Courtesy of GENERAL MOTORS CORP.
  13. Remove the oil fill tube.
    Fig 10: View Of Oil Filler Tube
    GM1335401Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the coolant temperature sensor.
    Fig 11: View Of Engine Coolant Temperature Sensor And Electrical Connector
    GM1335413Courtesy of GENERAL MOTORS CORP.
  15. Remove the EGR coolant pipe bolts.
    Fig 12: View Of Exhaust Gas Recirculation (EGR) Coolant Pipe, Hose & Bolts
    GM1335419Courtesy of GENERAL MOTORS CORP.
  16. Remove the EGR coolant pipe.
  17. Remove the water pump inlet pipe bolts.
    Fig 13: View Of Water Pump Inlet Pipe Bolts
    GM1335424Courtesy of GENERAL MOTORS CORP.
  18. Remove the turbocharger coolant outlet hose and clamps.
    Fig 14: View Of Turbocharger Coolant Outlet Hose & Clamps
    GM1335429Courtesy of GENERAL MOTORS CORP.
  19. Remove the water pump inlet pipe.
    Fig 15: View Of Water Pump Inlet Pipe
    GM1335432Courtesy of GENERAL MOTORS CORP.
  20. Remove the fuel pipe bracket bolt.
    Fig 16: View Of Fuel Pipe Bracket Bolt
    GM1335434Courtesy of GENERAL MOTORS CORP.
  21. Remove the thermostat housing bolts.
    Fig 17: View Of Thermostat Housing
    GM1335441Courtesy of GENERAL MOTORS CORP.
  22. Remove the thermostat housing.
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