General information about the cooling system (Chevrolet Tahoe 1)

The cooling system consists of an aluminum cross-flow radiator, a thermostat, a coolant pump driven by the crankshaft pulley, and connecting hoses and tubes. The radiator cooling system fan is mounted on the coolant pump shaft and is activated by a fluid coupling. The fan casing is mounted on the radiator. The radiator filler cap is equipped with a check valve that is triggered by increased pressure. The plastic coolant expansion tank is connected to the radiator by a hose. The thermostat is mounted in the front part of the intake manifold. When the engine warms up, the thermostat is closed and cuts off the flow of liquid from the radiator, directing it from the cylinder block to the cooling channels of the cylinder head. After the engine warms up, the thermostat opens, as a result of which the liquid enters the radiator, in which it is cooled and again enters the engine.

On models with automatic transmission, a transmission fluid cooler is built into the radiator.

The heater includes a separate radiator, blown by an electric fan. The temperature is regulated by mixing hot air with cold air, using a system of dampers.

The air conditioning system consists of an evaporator installed next to the heater radiator, a condenser installed in front of the cooling system radiator, a compressor and an accumulator.