Where is the cruise control module on a 1990 Chevy G20 van and how do you replace it?

The cruise control module on a 1990 Chevy G20 van is typically located under the dashboard on the driver's side, near the steering column. To replace it, first, disconnect the vehicle's battery to prevent any electrical issues. Then, remove the old module by disconnecting the wiring harness and unscrewing it from its mounting location. Install the new module by securing it in place and reconnecting the wiring harness, then reconnect the battery and test the cruise control system.