
TC on a car stands for Traction Control System, which improves the vehicle's passability. When the ABS anti-lock braking system detects that some wheels are slipping, it applies braking to the slipping wheels to prevent loss of traction. When TC is displayed on the car's dashboard, it indicates that the vehicle's traction control system is active. The relevant introduction of the traction control system is as follows: Introduction to Traction Control System: The control device of the traction control system is a computer that monitors the speed of the four wheels and the steering angle of the steering wheel. The Traction Control System, abbreviated as TCS, is also known as ASR or TRC. Its function is to ensure that the car obtains optimal traction under various driving conditions. Working Principle of Traction Control System: It can control the vehicle's traction by reducing the throttle opening to decrease engine power or by using the brake to control wheel slip. In cars equipped with ASR, the mechanical connection from the accelerator pedal to the throttle valve of the gasoline engine is replaced by an electronic throttle control device.

Hey, the TC light on Buick vehicles is the indicator for the Traction Control System, which primarily prevents wheel slippage. Especially when starting or accelerating on wet or icy surfaces, the system automatically reduces engine power or gently brakes the slipping wheel to maintain vehicle stability. I’ve driven a Buick for over a decade, and it’s helped me out several times during rainy, slippery conditions, preventing unexpected skids. However, be aware that if this light stays on or doesn’t illuminate at all, it might indicate a system issue, such as a faulty sensor or a loose connector. In such cases, it’s best to visit a 4S shop for inspection as soon as possible—don’t ignore it. Traction control typically works in tandem with the Electronic Stability Program (ESP), enhancing the overall safety performance of the vehicle. During maintenance, remember to ask the technician to check these components to ensure safe travels—safety always comes first.

As an ordinary Buick owner, I believe the TC symbol stands for Traction Control, which essentially means the car automatically helps manage the wheels to prevent them from slipping or spinning. Especially when driving in rain or on muddy roads, it works silently by controlling engine output to maintain tire grip, giving me peace of mind. But one winter when the road was icy, I suddenly noticed the TC light flashing a few times—it turned out the system was intervening to prevent the car from skidding. During daily driving, if this light stays on constantly, it might indicate a malfunction, and you should visit a repair shop to avoid disrupting your trip. Traction Control is actually part of the safety features, linked to the ABS braking system. Understanding it can help extend your car's lifespan and reduce unexpected repair costs.

During my experience with Buick, the TC indicator signifies that the Traction Control System is active or potentially malfunctioning. It limits power output during wheel slippage to prevent loss of control—a crucial feature for long-distance drivers like me, especially on wet highways. Sometimes the system light illuminates, indicating a need for inspection, such as dirty sensors or aged wiring, but a simple cleaning often resolves minor issues. The Traction Control System works in tandem with the Vehicle Stability System to enhance overall safety. Remember to mention this during routine maintenance to ensure the system remains responsive and reliable.


