Aaron,
Here is the update. I removed the extension and wired the GSU directly to the Telemetry module and it works. I then took two brand new extensions out of the pack and installed them, out of the jet on the bench, and neither will allow the telemetry menu to show up on the GSU. That is weird. I will try making a home made cable tomorrow, and try it, as the quality of the store bought cables is hit and miss.
Jake