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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 862 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Thermostat Replacement (LU3) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Water Outlet
    GM42895Courtesy of GENERAL MOTORS CORP.
  1. Remove the water outlet tube. Refer to Water Outlet Tube Replacement (LU3) .
  2. Remove the water outlet.
    3. Fig 2: View Of Thermostat
    GM42903Courtesy of GENERAL MOTORS CORP.
  3. Remove the thermostat.
  4. Clean the sealing surface of the water outlet.
  5. Clean the sealing surface of the intake manifold.
  6. Remove and discard the O-ring seal.
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