How do I replace the heater core on my 1994 Mazda B4000 4x4 on 1994 Mazda B4000

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Windows fog up often and little heat from system
(2) Answers
Contact me at for help with this problem. There's a TSB concerning this problem.
i think you have to pull the dash off