GM should have designed a firewall mounted remote reservoir on the 3800'*.
My PS pump was getting a bit noisy. I managed to pull the cap off and notice the level about one half an inch below reservoir rim. The only easy way of removing or filling is by using a veterinary syringe with a long 14" rubber hose attached, I was able to suction out the old PS fluid from the reservoir. It was quite dirty.
Installed to the same level Universal
(32oz bottle) LubeGard
PS fluid and all is quiet & smooth again.