Cadillac Repair: cadillac, e41, climate control

Question
I have a '93 sedan deville with the 4.9. Just reasently I was driving down the road and the ac just started blowing warm,and the car drives like i have the parking break on,the service engine light is on,im not sure what to do,can you please help!!!!

Answer
You need to see what CODE or CODES are in the computers via:

1. Ignition switch ON, Engine OFF.

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

3. Diagnostic CODES will appaer on the fuel display panel in the form of letters and numbers such as E41 or EE41 or F41 or FF41 and the display will stop at .7.0

4. Write down EXACTLY what you see in the EXACT order in which you see it.

5. Turn ignition OFF.

6. tell me what you get.