joeblacksnake Posted December 30, 2008 Report Share Posted December 30, 2008 I purchased the 98 deville and was told that is was stolen and the radio was taken and it didn't run right after that. I was told that it was taken in for repairs and the mechanic told the owner that the ecm needed to be replaced and a sensor behind the glove box. I drove it and the transmission would only go in 2nd gear. Which may have something to do with the ecm. I changed the ecm with a used one, just swaped them no programming, and it would not start. Changed it back to the original ecm started as before no problem. Do I need to program the used ecm and if so how. What is the other sensor behind the glove box any ideas. Any help is greatly appreciated. Thanks Link to comment Share on other sites More sharing options...
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