Originally Posted by nibroc
doing a '92 3/4 ton van is just as bad
I'll bet. I didn't expect this would be easy or fun.. I've only seen a few American vehicles where the heater box/plenum was directly accessible and they were made in the '60s.
Replacing the heater core on my 1988 Crown Victoria I had to pull the dashboard completely out about 10" and that required dropping the steering column. Both front doors had to remain fully open the entire time. I didn't have a garage at the time so had to do the job in the Autozone parking lot. That was 12 years ago but I still remember it was a very, very long day.