Replaced my heater core in my 1998 chevy blazer.
98 blazer heater core flush.
Next insert an airline into the outlet hose and seal the line with duct tape.
Part two shows what.
To flush a heater core locate the heater core on the vehicle s firewall loosen the clamps and disconnect the heater hoses.
Engine coolant flows continuously from the lower radiator hose to and through the heater core causing the unit to heat.
This is part one i also removed the entire dash to see what the big fuss was all about.
The heater core in your 1998 chevy s10 blazer is radiator style unit used to heat the interior cabin of your truck.