The 2000 a 4L60E? You understand the converter is a huge oil and debris container that, if contaminated, can trash a rebuilt transmission quickly. The TC clutch has unknown wear on it as well. You likely would be trouble ahead to get a new or rebuilt one.
The short answer is no. 98+ is a woven carbon torque converter clutch that is never meant to fully lockup. 95 is 1st gen pwm lockup, but uses a regular lockup clutch material that is meant for full lockup only. And depending on what the 2000 came out of, it could be a 298mm or 300mm tcc in a full size truck chassis. Converters for stock applications are not that expensive and is not somewhere to cut corners.