Chevrolet Express 1500 transmission slipping in second and third gear, shifts when letting up on gas on Chevrolet Express 1500

Some Chevrolet Express 1500 owners report experiencing transmission slipping, particularly in second and third gears, which can lead to lasting damage if not addressed promptly. Symptoms include an increase in RPMs without acceleration when shifting into third gear, indicating a slipping transmission. Possible causes for this issue may include worn-out parts, such as the reaction planetary, particularly in high-mileage vehicles or those with insufficient lubrication. Additionally, a faulty solenoid can cause the transmission to become stuck in a single gear, resulting in rough driving conditions and potential damage to both the engine and transmission. Owners may find it beneficial to use a bidirectional scanner for diagnostic testing to identify issues related to shifting problems. Furthermore, low transmission fluid levels can contribute to slipping without triggering error codes, emphasizing the need to check fluid levels as a potential cause. Addressing these issues effectively is crucial to prevent further damage to the vehicle.