1990 Chevrolet G Series Van (G10) Q&A

1990 Chevrolet G Series Van (G10) Question: heater core disassembly of heater core cabinet?

trying to replace the heater core, but don't know how to get the cabinet apart, does it unbolt from both inside under the dash and outside through the firewall? -
Answer 1
Did you ever find an answer? I need to do the same in a 91. Thanks. -