What does the TC check displayed on the Buick screen mean?

2 Answers
LeNora
07/24/25 3:55pm
TC stands for Traction Control System. More information about TC is as follows: 1. The role of TC is to enable the car to obtain the best traction under various driving conditions: When the ABS anti-lock system detects that some wheels are slipping, it will apply braking to the slipping wheels to prevent the loss of traction on the slipping wheels. When the system is working, the yellow TC indicator light on the dashboard flashes to alert the driver. 2. If the TC check indicator light on the Buick screen is on, it indicates a fault in the Traction Control System: The Traction Control System can improve the driving stability of the car, enhance acceleration, and improve climbing ability. The reasons for the TC light to come on include electromagnetic valve failure, dirty engine oil clogging the electromagnetic valve filter, wear of the actuator gear and impeller leading to oil pressure leakage and alarm, and dirty throttle with an opening reaching 20%, causing the engine computer to misjudge a TC fault.
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McMarley
08/11/25 8:54am
When you see the "TC Check" prompt on your Buick's screen, as a seasoned Buick driver with years of experience, I can tell you that it means there's an issue with the Traction Control System—possibly a faulty sensor or wiring problem. The traction control plays a crucial role in preventing wheel slip on rainy or icy roads, ensuring stable driving. Once this warning appears, you should be cautious because if it fails, the car may lose control during turns, leading to accidents. I recommend slowing down immediately, finding a safe spot to pull over, and checking the manual for temporary fixes. Then, take your car to a professional repair shop as soon as possible for a diagnostic scan—don’t attempt DIY fixes, as you might make things worse. Regular maintenance, such as cleaning sensors and checking tires, can help prevent such issues.
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