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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1003 (Engine Cooling System) >> Repair Instructions >> Thermostat Replacement (6.6L (LLY) Engine) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the thermostats for sticking, cracks, and/or leakage of wax.
  2. Replace the thermostats if damage is found.
  3. Clean the thermostat housing and thermostat housing cover sealing surfaces.
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