Chevrolet C1500 ABS light on with suspected left front wheel speed sensor issue and brake pedal slowly sinking on Chevrolet C1500

Some Chevrolet C1500 owners report experiencing issues with the ABS light being illuminated, which may indicate a malfunction in the braking system, potentially linked to a faulty left front wheel speed sensor. Additionally, some owners notice a sinking brake pedal, suggesting a more serious problem within the braking system that could involve the ABS module or sensor circuit. The left front wheel speed sensor is crucial for measuring wheel speed and relaying this information to the ABS control unit, and common problems with ABS systems in Chevy trucks include low-speed activation issues. If both the ABS and engine lights are on, it may be due to a faulty left front wheel speed sensor or other issues such as poor electrical connections. To troubleshoot a C0035 code related to the left front wheel speed sensor, some owners find it necessary to check for wiring damage, clean connections, and test the sensor output signal. Moreover, road debris, dirt, or moisture can disrupt wheel speed sensors, leading to inaccurate readings that trigger the ABS warning light. It is recommended that owners address these potential issues promptly and consult a professional mechanic for a thorough diagnosis and repair to ensure the safety and proper functioning of the braking system.