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No you must remove the dashboard. I just had it done on a 1996 Bravada and it cost me $450.00.
Go buy a service manual. This procedure is difficult. It includes taking the whole dash off.
it is located on the right side of the passenger compartment of the vehicle you would have to remove the whole dash in order to replace it so if you have to ask where it is you probaly won't be able to replace it.
around 1000 dollars but i did my friends for 500 and took about 4 hours call 773-780-6172
Remove the water supply hoses to your 1998 Chevy Lumina heater core. Remove the heater core retaining bolts. Reverse the procedure to install the new heater core.
Here is a website that helped my change the heater core on my 94 bravada on around 12/15/05: http://www.sytyarchives.com/howto/viewarticle.php?article_name=heater_core.php&dir=climate_controls
Thermostat stuck open or a clogged heater core. Service and flush the cooling system and replace the thermostat.
How do you replace the heater core on a jimmy?
Possible causes are, low on coolant, thermostat stuck open, clogged heater core or vacuum scorce not getting to the heater control.
It is a very involved procedure. Get a manual on your car from the parts store or from AUTOREPAIR2000.COM
The Heater Core is behind the dashboard and is very difficult to replace. The entire dashboard must be removed to facillitate repair. There is another web page which I have that details the dash removal procedure. As soon as I can I will submit the procedure to this website.
A "heater" or a "heater core"?