What does it mean when the yellow TC slash indicator lights up in a Buick?
2 Answers
Buick TC slash yellow indicator light on means the traction control system is turned off. The reasons are: 1. Accidentally touching the traction control switch next to the gear shift lever, causing the traction control system to be turned off; 2. Traction control system malfunction. The function of the traction control system is to enable the car to obtain optimal traction under various driving conditions. Buick is an automobile brand marketed by General Motors in the United States, Canada, and China, and is sold in North America, China, CIS countries, and the Middle East. Buick's lineup includes many well-known models: Excelle, Verano, Regal, Envision, Enclave, GL6, GL8 Land Business Class, GL8 ES Land Elite, pure electric VELITE 6, and the high-end sub-brand Avenir.
That TC (Traction Control) light with a slash illuminated on the dashboard is quite common in Buick vehicles, usually indicating an issue with the traction control system or that it has been manually turned off. A friend of mine experienced this – the light suddenly came on while driving, and he initially ignored it. However, he nearly lost control on a rainy road, which scared him into driving slowly to a repair shop for inspection. There could be several reasons: perhaps you accidentally pressed the TC disable button (this system normally activates automatically to prevent wheel slip), or the wheel speed sensor is faulty and can’t detect speed changes. It might also be related to the ABS system, such as wiring or software glitches. A yellow light is a warning-level alert, less urgent than red, but still requires attention. For safety, slow down next time you drive, check your owner’s manual for guidance, and try restarting the engine—sometimes this resolves temporary glitches. If you’re unsure, visit a 4S dealership or professional repair shop early; fixes typically cost a few hundred yuan. Don’t delay until it becomes hazardous.
