What are the two wires on the Cruze thermostat?
2 Answers
The two wires on the Cruze thermostat are a ground wire and a signal wire. The thermostat is a valve that controls the flow path of coolant, serving as an automatic temperature-regulating device. It typically contains a temperature-sensing component that opens or closes the flow of air, gas, or liquid through thermal expansion or contraction. The Chevrolet Cruze is a compact benchmark model designed by General Motors for both design and performance. The vehicle measures 4666mm in length, 1807mm in width, and 1460mm in height, with a wheelbase of 2700mm. The Cruze's dynamic coupe styling innovatively interprets the characteristics of traditional three-box sedans. Its classic front grille, sculpted shoulder lines, and dual-cockpit interior design showcase Chevrolet's new design language.
Hey, that time when my Cruze had the low coolant temperature warning light on, I went to fix the thermostat and found two wires on it, usually a red positive wire and a black ground wire. They are power wires supplying electricity to the internal heating element of the thermostat. When the vehicle is cold-started, the ECU controls the heating to quickly open the thermostat, allowing the coolant to circulate and helping the engine warm up faster to reduce emissions. If these two wires are broken or have poor contact, the coolant temperature may become abnormally high or low, and a P0128 fault code may appear on the dashboard. Later, I checked and found that the positive wire comes from the fuse box, and the ground wire is connected to the vehicle's frame. When repairing it yourself, remember to disconnect the battery to prevent short circuits and use a multimeter to check the voltage. Common issues include oxidation, corrosion, and aging of the connectors, which over time can cause problems affecting engine performance. Replacing the faulty parts promptly can solve the issue.
