Chevrolet Blazer TCC shudder and surge issue persists after fluid change and 1,200 miles on Chevrolet Blazer

Some Chevrolet Blazer owners report experiencing TCC (torque converter clutch) shudder and surge issues that persist even after a fluid change and driving 1,200 miles. These problems may be attributed to excessive assembly lube in the transmission fluid, which can lead to poor control and shuddering at low speeds. Additionally, contaminated transmission fluid or a damaged torque converter could exacerbate the situation. In some instances, the shudder might not be directly related to the TCC but could stem from other factors such as fish bite, chuggle, surge, or vibration, necessitating different diagnostic approaches. Owners are advised to monitor the TCC slip speed and use a scan tool to check if the TCC-related concerns can be confirmed. Furthermore, accumulated water in the transmission fluid can negatively affect friction and contribute to shuddering, particularly when the engine operates in V4 mode. It is recommended that affected owners consult a qualified mechanic or dealership service center specializing in Chevrolet vehicles for thorough diagnostics and appropriate corrective measures.