How to change c5 gearbox auto?

To change the C5 automatic gearbox, first ensure the vehicle is safely elevated and secured. Disconnect the battery, then remove the driveshafts, torque converter bolts, and any electrical connectors linked to the gearbox. Unbolt the gearbox from the engine and carefully lower it from the vehicle. Install the new gearbox by reversing the process, ensuring all connections are secure and fluid levels are checked before starting the vehicle.