How to turn off the TC light on a Buick?
2 Answers
The owner accidentally touched the traction control switch next to the gear shift lever. The owner can simply turn the control switch back on to deactivate the TC light. If the TC light remains on after turning off the traction control switch next to the gear shift lever, it indicates a malfunction in the traction control system, and the vehicle should be taken to a repair shop for inspection. TC stands for Traction Control system. When the ABS detects wheel slippage, the traction control system applies braking to the slipping wheel. Possible causes of the malfunction include: engine solenoid valve failure; dirty engine oil clogging the solenoid valve filter screen; or wear and tear on the actuator gear and impeller.
That day, while driving my Buick on the road, the TC light suddenly came on, and my heart skipped a beat. Looking back, this light is the traction control warning light, and common causes include dirty or interfered wheel sensors, system software bugs, or voltage instability causing false alarms. As a regular driver, when encountering this situation, you can first try a simple solution: park the car in a safe place, turn it off completely, wait for three minutes, and then restart the engine. After the system self-check, the light may go off. If the light remains on, you need to carefully inspect related components, such as checking for uneven tire wear or abnormal tire pressure, as these can easily trigger fault signals. Of course, if multiple restarts don’t work, it’s best not to force the car to drive, as safety is significantly affected, especially in rainy or snowy weather when traction control failure can easily lead to accidents. It’s recommended to promptly visit a professional repair shop to read the fault codes with a diagnostic tool and carry out targeted repairs. During regular maintenance, periodically cleaning dust from the chassis can prevent sensor buildup and reduce the occurrence of such issues. After such treatment, the light will generally be eliminated.
