Chevrolet Silverado 1500 HD dual temperature control issue with hot driver side and cold passenger side, fix involves cleaning grease from control module on Chevrolet Silverado 1500 HD

Some Chevrolet Silverado 1500 HD owners report experiencing dual temperature control issues, where the driver side blows hot air while the passenger side blows cold air. To address this problem, it is advisable to have a qualified mechanic diagnose and repair the issue, as they can identify the root cause and suggest appropriate solutions. Additionally, owners have found that recalibrating the HVAC system may resolve temperature discrepancies, especially after disconnecting the battery or performing repairs. In some instances, a failed actuator for the temperature blend door has been identified as a cause of the imbalance, making inspection of the actuator's functionality essential. Depending on the severity of the issue, component replacement, such as faulty sensors or actuators, may be necessary to restore proper functionality. Lastly, some owners have successfully resolved issues like the AC being stuck on hot or cold by resetting the HVAC/ECAS fuse, but persistent problems may require further troubleshooting.