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Engine Coolant Thermostat Housing Installation

WARNING: This page is about a different variant/trim than selected.
    CAUTION:

    Refer to Engine Coolant Thermostat Housing Caution .

  1. Clean sealing surface.
  2. Install a NEW engine coolant thermostat housing seal.
    3. Fig 1: Engine Coolant Thermostat Housing
    GM2026832Courtesy of GENERAL MOTORS COMPANY
  3. Install the engine coolant thermostat housing (2).
    4. CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Screw in the 4 bolts until the engine coolant thermostat housing is in contact with the cylinder head.

  4. Install the 4 engine coolant thermostat housing bolts (3) and tighten to 2 N.m (18 lb in).
    5. Fig 2: Engine Coolant Thermostat Housing Bolts Tightening Sequence
    GM2028129Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Following the proper fastener tightening sequence and torque is essential. Failure to do so may fracture the thermostat housing.

  5. Tighten the 4 engine coolant thermostat housing bolts to 8 N.m (71 lb in) in sequence (1-2-3-4).
    6. Fig 3: Engine Coolant Thermostat Housing
    GM2026832Courtesy of GENERAL MOTORS COMPANY
  6. Install the engine coolant thermostat housing retainer (1).
  7. Install the engine coolant thermostat housing retainer nut (4) and tighten to 6 N.m (53 lb in).
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