What are the causes of automatic transmission failure in the Chevrolet Sail?
2 Answers
Causes of transmission failure in the Sail include: solenoid valve failure, mechanical failure, control unit failure, clutch failure, and computer failure. The details and corresponding solutions are as follows: 1. Solenoid Valve Failure Inside the small solenoid valve, there is a valve core. The valve core operates via electrical current, performing rapid piston-like movements. However, if the valve core becomes stuck or damaged, it can cause unstable oil pressure inside the transmission, leading to jerking, impact, and other issues. Use diagnostic tools to check whether the solenoid valve is damaged. If problems are found, replace the solenoid valve with a new one. 2. Mechanical Failure Internal mechanical wear in the transmission can also lead to transmission failure. Issues such as damaged shift forks, worn bearings, and other mechanical component failures are part of transmission mechanical failure. If the shift fork is damaged or broken, there will be mechanical wear inside the transmission, manifesting as abnormal noises, failure to shift up, shaking, or impact. Replacing the damaged parts and adjusting the transmission can easily resolve mechanical failures. 3. Control Unit Failure Control unit failure is also one of the common issues. Internal components like accumulators, slave cylinders, or valve body damage can cause control unit failure. Replacing the damaged parts of the control unit can resolve the issue. 4. Clutch Failure Clutch wear in the EMT transmission is a common problem. The reason is simple: this EMT transmission is essentially a manual transmission with an added actuator, turning it into an automated manual transmission. The advantage is that it significantly reduces manufacturing costs. In manual transmissions, the clutch tends to fail after the vehicle reaches a certain mileage. If this type of failure occurs, inspect and confirm the issue before replacing the clutch. 5. Computer Failure This transmission uses an external computer. Computer failures are rare, but they do occur occasionally. Typically, computer failures are caused by issues with the computer board or sensors. Replacing the sensors or computer board can resolve the problem. Computer failures are usually sporadic. Methods to address Chevrolet Sail transmission failure: Inspect the internal clutch, actuator, shift fork, and solenoid valve for damage. Repair or replace the clutch, actuator, shift fork, and solenoid valve to completely resolve the transmission failure issue in the Chevrolet Sail.
I've been driving a Chevrolet Sail for several years and encountered transmission issues. Common causes include deteriorated fluid and lack of maintenance. The Sail's automatic transmission is prone to unstable oil pressure due to prolonged oil change intervals, leading to gear skipping or abnormal noises. Additionally, this model has some defects in its electronic control unit - aging sensors may falsely report error codes, causing sluggish shifting responses. Clutch plate wear is also a major issue, especially with frequent operation in urban traffic jams which accelerates wear. I remember once neglecting the maintenance interval - the transmission fluid turned black and foul-smelling, resulting in gear engagement failure and costly repairs. In conclusion, regular fluid inspections and oil changes are crucial - don't penny-pinch your way into big troubles.
