heater core problem
 

Does anybody no how to replace a heater core on a 1979 k5 blazer 350 4x4? its starting to get a little cold trying to fix it.

search youtube

How hard is it to replace one in the 2nd gen blazers? I know you gotta pull the dash out. Ive never dont that before and wonder how hard it is?

Easy job, just takes a while. Make sure you don't pinch the harness when re-assembling it, and that everything gets plugged back in. I hear lots of issues on here after people replace a heater core and something doesn't work afterward.

Search the forum instead of thread jacking, there is a lot of info on doing that.

k5s are pretty easy especially if it doesnt have ac, you just unhook the cables under the dash and unbolt it from inside the engine compartment and you can do it on the table.

actually the next generation of full sized trucks are even easier. my 1990 pick up truck has a access panel. just four screws under the dash and its right there