How to eliminate the TC slash yellow light displayed on a Buick?

[IkerRose]

When a Buick displays a TC slash yellow light, it indicates that the vehicle's traction control system is either turned off or malfunctioning. The solution is to turn on the traction control system. If the system cannot be activated, it is necessary to inspect the traction control system's sensors or the vehicle's onboard computer to identify and resolve the issue, thereby eliminating the warning light. The following are common causes for the TC light to illuminate: 1. Solenoid valve malfunction; 2. Dirty engine oil clogging the solenoid valve filter; 3. Wear on the actuator gear and impeller leading to oil pressure leakage and triggering the alarm; 4. Dirty throttle body with an opening reaching 20%, causing the engine computer to mistakenly diagnose a TC fault.