Hydroboost Fluid Question

[Liams69RS]

I know this is a very old thread but thought I’d give it a try to get some clarification/help. I have a Hydroboost system in my 69 Camaro with a 6L90e and recently went to go drive it but the shifter won’t get out of “Park”. I drove the car about 2 months ago. After further digging in, I noticed a leak from my PS Gear Box and was wondering if that was the culprit? Before I swap out the gear box, would I just need to add more PS fluid to get pressure up to standard or what else could be the issue of my shifter not going into any other gear?



Thanks in advance.