Chevrolet Sonic Repair Manual: Engine Coolant Thermostat Housing Installation

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Cooling / Thermostat / Engine Coolant Thermostat Housing Installation

Caution:

Refer to Engine Coolant Thermostat Housing Caution.

Clean sealing surface.
Install a NEW engine coolant thermostat housing seal.

Install the engine coolant thermostat housing (2).

Caution:

Refer to Fastener Caution.

Note:

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

Install the 4 engine coolant thermostat housing bolts (3) and tighten to 2 Y (18 lb in)
.

Caution:

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

Tighten the 4 engine coolant thermostat housing bolts to 8 Y (71 lb in)
in sequence (1?E?E?E).

Install the engine coolant thermostat housing retainer (1).
Install the engine coolant thermostat housing retainer nut (4) and tighten to 6 Y (53 lb in)
.

Engine Coolant Thermostat Replacement (LUW)

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