Why is your 1983 Oldsmobile Delta 88 transmission slipping from 2nd to 3rd gear?

Transmission slipping from 2nd to 3rd gear in your 1983 Oldsmobile Delta 88 could be due to low Transmission Fluid levels, which can cause inadequate hydraulic pressure. It might also be a sign of worn transmission bands or clutches that are failing to engage properly. Additionally, a malfunctioning governor or a problem with the transmission control module could be contributing to the issue. It's advisable to have the transmission inspected by a professional to diagnose and address the problem accurately.