Chevrolet Repair: heater core, heater core, lundy

Question
When replacing the heater core in a 95 Jimmy, how do you get to the top heater case bolt under the dash?

Answer
Hello Lundy,
I was in an s
S10 manual the other day, and it said the dash needed to be removed to replace the heater core.
I have no personal experience with it, but just looking at the photo, I thought I could just remove the access cover, but I didn't have a vehicle here, and the book was S10, which I think would be the same.

At the public library, you can read the manuals in the refference section.

Van