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Eldo '94 and '02
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My '94 Eldorado is having HVAC problems. It began by the fan continuing to run when the key was turned off. Local fix-it man said to replace the heating/cooling module {under the glove box} so I found one on Ebay and changed it. It did then work, for about a day, and failed again. Another change, and now NOTHING works! Anybody have any thoughts on why?
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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20,104 Posts
My '94 Eldorado is having HVAC problems. It began by the fan continuing to run when the key was turned off. Local fix-it man said to replace the heating/cooling module {under the glove box} so I found one on Ebay and changed it. It did then work, for about a day, and failed again. Another change, and now NOTHING works! Anybody have any thoughts on why?
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the "local fix-it man" was wrong -

1994 was the first year that the blower motor used a self-contained speed controller -

I recommend replacing the blower motor - then re-install the original climate control module
 
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