SARAH313 Posted December 13, 2010 Report Share Posted December 13, 2010 I have a 1997 Deville with no heat right now. I don't have much money to put into this so hopefully its a quick easy fix. First off I am getting 4 current codes : ACM B1315 SDM B1136 TCS C1233 MMM B1249 Ok The heat doesn't blow out or cold for that matter. But if you move the temperature up or down you can feel the difference in temperature. I was told the blend doors are opening and closing. I was also told the blower runs hot even though the key is not in the ignition. Also the DIC always says check coolant level although it is full. 1 last thing although I doubt this matters, apparently the A/C compressor is missing, must have been in an accident and was never replaced. I just want to make sure this doesn't affect the heat. Please someone give me advice on what this could be, we are getting snow now and I have no heat or defrost to be able to drive. Thanks Link to comment Share on other sites More sharing options...
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