Question about 1993 Cadillac DeVille

3 Answers

Why is myelectronic climate control panel Dead No Lights no blowers no air or heat.

No life on panel no temps outside od inside no fan blower no heat no air just black!!!!!!!!! Security Lite on dash comes on and whole car won,t start.Put Emergency brake on for about 10 to 15 min then it cranks up.

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I like some of these answers these people post , I believe people need an want to have a little more info then that ! The guy can't even spell ! Neads -- needs diagnostic done on it , an what kind of diagnostics does it need ? Well lets see if I can shed some light on the situation ! I worked at a Cadillac dealership back in the late 80's . The climate control panel is electronic an is hooked up to the BCM - body control module another electronic control module an when operating as designed they communicate info back an forth but yours is dead an the BCM isn't see any info . an the BCM has the function of the security system probably too . An it won't let it start ! Your probably going to need a new climate control head ! This system is connected to diagnostics it's self , if you push the off an warmer buttons at the same time it will go into diagnostic mode an show codes , an do on vehicle self test . With out the service manual you can't do it yourself !

Posted on Apr 20, 2015

Testimonial: "Where can I get a service manual.And thanks for the help.The car starts when I set the parking brake and leave it for about 5 minutes.Then crank it.Handbook says it resets computer but it don't work for climate control."

  • Jeff Armer Apr 21, 2015

    You can go to www.alldata.com , for $ 16.00 i think you can get on line service info for your vehicle for a year .

  • Jeff Armer Apr 21, 2015

    These vehicles had an issue with coolant or moisture getting into the bcm at the pass side floor board, causing the bcm & both dash units to fry. (all it takes is a drop) .



    If you check the heater core box, I'll bet it is damp on the inside.



    (look behind the glove box & you will see the programmer (has vacuum lines & elec. connectors) remove the programmer & the heater core cover).



    If is damp, this is your cause. 7 times out of 10.



    If it is not. then it is one of the three modules. Unfortunately there is no way to test the modules to find out which one ( or combo ) failed.



    Be sure that the replacement modules part numbers match ( check your local bone yard & give them the part numbers off each piece ( on the back of each piece there is a part labile) to save yourself a trip)



    replace the heater core if the box is damp, the bcm & both dash units no matter what.



    be sure to use a gop of dielectric grease at the bcm.






    Read more: http://www.justanswer.com/car/1hd3k-tryi...

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Jeff is right on the money
Nuff said

Posted on Apr 20, 2015

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Neads diognostics done on it

Posted on Apr 20, 2015

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