I just picked up a 99 Durango 5.9 4x4. It's throwing trans codes 1765 ( Trans 12 Volt Supply Relay CTRL Circuit) and 753 (Shift Solenoid A Electrical). Anyone experience these two codes together? Is one causing the other, or do I have two separate problems? What should I be looking for? Any help would be much appreciated!

Edit: When starting out in Drive, I only have 3rd. I can manually shift into 2nd and then into Drive, but no 1st or 4th.