Chevrolet C2500 Suburban shifting issue after moisture exposure, improved temporarily by unplugging and replugging shifter solenoid on Chevrolet C2500 Suburban

Some Chevrolet C2500 Suburban owners report experiencing shifting issues after moisture exposure, which may be linked to depleted fluid frictional properties that lead to hard shifting. Additionally, these owners note that electronic or software-related problems, such as a faulty shift solenoid, can contribute to rough shifting. Some also mention that a malfunctioning Transmission Control Module (TCM) may result in incorrect or non-existent shifting, potentially necessitating replacement or reprogramming. Furthermore, issues with the shifter cable can create difficulties in shifting gears, affecting overall transmission performance. Interestingly, some owners find that unplugging and replugging the shifter solenoid temporarily alleviates these shifting problems, indicating a possible electrical connection issue that warrants further investigation for a more permanent solution.