Hi, I have a 96 Deville, with problems I have listed on another post. I have forgoten how to check the codes, and where to find out what they mean. Can anyone help? Thanks

 

Press off and warmer(red button) on climate control for 3-5 sec. All segments on cluster will flash on the off. DIC will display module then codes in it. Post codes and someone will tell you. Buying FACTORY service manuals, there are 2 volumes, can help you greatly.