What does Buick TC mean?
1 Answers
Excluding accidental activation, when a Buick displays TC, it indicates a malfunction in the traction control system. Below are the specific fault reasons that cause the TC light to illuminate: 1. Solenoid valve failure. 2. Dirty engine oil clogging the solenoid valve filter screen. 3. Wear between the actuator gear and impeller leading to oil pressure leakage, triggering the alarm. 4. Dirty throttle body with opening reaching 20%, causing the engine computer to misjudge a TC fault. 5. The working principle of the traction control system is to replace the mechanical connection between the accelerator pedal and the throttle with an electronic throttle control device. Sensors transmit the accelerator pedal information to the ECU, which then generates a control voltage signal based on this input. The servo motor adjusts the throttle according to this signal, thereby reducing throttle opening and controlling tire slip. It is recommended that the owner visit a repair shop for inspection as soon as possible.