You have to completely remove the dash to get access to the heater core.
You have to remove the entire dash board to gain access to the heater core.
I have a 1999 blazer. The heater core clogs up about once a year from the Dexcool. Try having it (heater core) flushed and use Prestone (Extended life) instead of Texaco.
how to replace a heater core in a 1997 Chevy blazer
how do i replace a heater core in a 2001 Chevrolet blazer
Instualation of a heater core on a 1999 Ford Explorer V6, how do you install the heater core.
Drain the water from your 1994 Chevrolet Blazer cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
The heater core is inside the heater unit on the passenger side under the dashboard
that model is acually located under the hood on the fire wall on pass side..
The heater core has no gasket. If it is leaking, it must be replaced.
with your hands
How much will it cost me to replace the heater core in my 1999 Mercury