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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 688 (Engine Cooling System) >> Repair Instructions >> Thermostat Replacement (4.3L Engine) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a NEW O-ring seal to the thermostat.
  2. Install the thermostat.
  3. Install the water outlet.
  4. Install the water outlet studs. Tighten the water outlet studs to 25 N.m (18 lb ft).
  5. Install the inlet hose to the water outlet.
  6. Position the inlet hose clamp at the water outlet.
  7. Align the hinge clip with the lip on the throttle body. In order to install the air cleaner outlet duct, pivot the air cleaner outlet duct downward until the mounting stud is through the hole.
  8. Install the air cleaner adapter nut.
  9. Install the PCV hose.
  10. Tighten the air cleaner outlet duct clamp at the MAF/IAT sensor.
  11. Fill the cooling system. Refer to Draining & Filling Cooling System .
  12. Inspect the cooling system for leaks.
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