2001 Chevy Metro replace tranny and will not move I replaced it drove 3 miles fine full of fluid and then I floored it and it died. Started it up and when put in gear it acts like in neutral.?

It sounds like you may have a problem with the transmission control, linkage, or possibly the torque converter. Since it initially drove fine after the replacement, it's also worth checking for any error codes or leaks in the system. Additionally, ensure that the Transmission Fluid is at the correct level and that it is the right type for your vehicle. If everything seems fine, it may require a professional diagnosis to determine if there's an internal issue with the new transmission.