Cadillac Repair: Service engine light, climate control, ter

Question
hi, i have a 93 deville 4.8 with 114204 miles on it was owned by elder couple but, my problem is the service engine light only comes on when i hit about 50-60 mph and when i shout the engine off to park or work it doesn't come until i reach 50-60 mph what seem to be the problem when???

Answer
What you need to do is access the computer and obtain the fault CODES that are stored in the computer.

1. Turn ignition switch to the ON position. Do NOT start the engine.

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

3. On your fuel data display you will se LETTERS & NUMBERS display and then the display will stop at .7.0

4. Turn ignition switch OFF.


Tell me EXACTLY everything that displays on the fuel data display af ter you release the OFF and WARMER buttons as if you were video taping the display.