Cadillac Repair: electrical?, number combinations, climate control

Question
1993 cad,eldorado,northstar. i hah some major work done 4 months ago approx 3000k dollars  what started to be a tune up because of hard starting. lately lately after driving a few miles ,i will shut engine off ,and have iy noy start .after sitting for 15 or 20 minutes it will start .today going down the freeway it quit running ,after pulling over it started?  what going on? manny

Answer
Lets check your computers for any fault codes.


1. Ignition ON. Engine OFF.

2. Simultaneously push and hold for 3 seconds the OFF and WARMER buttons on your climate control panel.

3. Write down the LETTER/NUMBER combinations that appear on the display until they stop displaying. Write them down EXACTLY in the sequence that they display.

4. Turn off the ignition.


5. Let me know what they are.