I have a 1992 Chevy Lumina that blew the heater core. This job I rate as moderate/slightly easy to do. The heater core is located under the dash right below/behind the ashtray. There is a plastic cover there that has about 8 torx screws in it. Remove that cover and again another cover below that with some torx there. The heater core is behind the second cover. MAKE SURE your car is cool or the core can and will burn you badly! (bad experience!) I don't have illustrations to do this, and I'm sorry if my explanation sucks, but its the best I can do. As far as the coolant temp goes, I got myself an add-on temp gauge and wired it up. You can put the temp sensor that comes with the kit in the drivers side coolant bleeder's place (Thermostat Housing). Just remove the bleeder, not the small part, the whole thing, and thread in the sensor.
Replace the thermostat.
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.
Drain the water from your 1993 Chevy Lumina cooling system. Remove the water supply hoses to your heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
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This Is A Difficult Job, Take It To A Garrage. It Will Save A Lot Of Headache And Money.
Take out the whole dash and then the heater core should be behind the glove box on the passenger side.
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I have a 1993 Chevy lumina van that has heat but doesn't have a fan how do I fix the fan?
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Remove the wiring harness from the back of your 1998 Chevy Lumina heater motor. Remove the heater motor retaining bolts. Remove the fan from the front of the heater motor. Reverse the process to install the new heater.
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