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Chevy Lumina
Thermostats
Heater Cores and Blower Fans

How do you change a heater core on a 1994 Chevrolet Lumina?

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2006-04-21 22:02:59
2006-04-21 22:02:59

I have just started replacing the heater core in my 1994 lumina. You will need to remove all of the panneling under the dash you will need a screw driver and a socket set. I recommend getting a small 1/4 socket wrench ( auto zone for about 8.00) There are some very tight spots that you will to remove screws from.( NOTE SOME ARE BLACK TRIM SCREWS ASWELL). The socket you will need is a 7mm. After removing all of the screws. To get the driver side piece off you will need to remove a little round clip above the gas pedal that holds that piece of the pannel on. Now their is a black front pannel in the center under the dash, behind their is the heater core. The fun part is getting all the screws out, it will take some time. I used an extension on my socket wrench to get the back ones out. The best way in is to lie on your back on the passenger side of the car to get to them. Once they are all off you should be able to pop that front cover right off. If it doesnt come right off you may have missed a screw. Becareful pulling it down and off I found a surprise inside, some of the anti-freeze built up from the leaking core. Now you should have a good view of the heater core. And more screws to remove. You may want drian the anti-freeze before you pull the core, but as for me all mine leaked out. I found the core replacement at auto zone in stock for $50.00. Good luck to all.

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