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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) >> Installation Procedure

Installation 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. Install the thermostats and seals to the thermostat housing.

    The rear thermostat (4) has 2 vent valves. Install with the vent valves towards the rear of engine.

    2. Fig 1: View Of Rear Thermostat & Vent Valves
    GM654534Courtesy of GENERAL MOTORS CORP.
  2. Install the thermostat housing cover with a NEW gasket.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the thermostat housing cover bolts.

    Tighten:  Tighten the bolts to 21 N.m (15 lb ft).

    4. Fig 2: View Of Thermostat Housing Cover
    GM1367688Courtesy of GENERAL MOTORS CORP.
  4. Install the fuel line bracket.
  5. Install the fuel line bracket bolt.

    Tighten:  Tighten the bolt to 21 N.m (15 lb ft).

  6. Install the water outlet tube. Refer to Water Outlet Tube Replacement (6.6L (LLY) Engine) .
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