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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1284 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Thermostat Replacement (LU3) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Thermostat
    G00572889Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW O-ring seal to the thermostat.
  2. Install the thermostat.
    3. Fig 2: Water Outlet Tube
    G00572888Courtesy of GENERAL MOTORS CORP.
  3. Install the water outlet.
  4. Install the water outlet tube. Refer to Water Outlet Tube Replacement (LU3) .
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