What does the TC/slash yellow light on the Buick Regal indicate?
1 Answers
The "TC" indicator light on the dashboard corresponds to the Traction Control System, also known as the Track Control System. The reasons for this light to illuminate are as follows: 1. It may be due to accidentally touching the traction control switch next to the gear shift lever, turning off the traction control system. 2. A malfunction in the traction control system. The causes of traction control system failure are as follows: 1. Solenoid valve failure. 2. Dirty engine oil clogging the solenoid valve filter screen. 3. Wear and tear on the actuator gear and impeller causing oil pressure leakage and triggering the alarm. 4. Dirty throttle body with an opening reaching 20%, causing the engine computer to misjudge a TC fault.