I know you must take the dash out and heater box. Make sure you hook all lines back up correctly or your vents won't work correctly. Good Luck and know that you'll be in for a LONG day!
The answer is at www.autozone.com. I'm about to replace mine this weekend.
you have to take the dash out.it's a big project.
Yes.
Could you rephrase the question? is your heater core plugged up or clogged or do you want to know how to turn your heater off?
Remove the water supply hoses from your 1992 Chevy S 10 pickup truck heater core. Remove the heater core retaining bolts. Reverse the process to install your new 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.
What are the steps to change the heater core on a 1991Chevy S10 pickup ?
A blockage in the heater core is the most likely cause. This is a difficult and expensive repair.
Probably around $500 or more if you have AC.
With proper tools and knowledge, 4 hours, 5 hours if it has ac.
If coolant is leaking inside your cabin, you have a leak in the heater core. The only repair is to replace the heater core. Most auto parts stores sell them.
Replace the radiator cap and be sure the coolant reservoir is kept full to the line, it will bleed itself.