Cadillac Repair: 1999 Eldorado heating and feeling sluggish, cadillac eldorado, speed button


Question
did not try that yet. Got in car this morning and it would not start. Turns over, but will not start. Also I'm getting an inaccurate fuel reading. Can you also tell me how to reset the check engine light?
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The text above is a follow-up to ...

-----Question-----
I recently got an oil change and they also cleaned the fuel lines with Gumout. Since then, my car has been feeling sluggish. Also when i turn the heat on, cold air comes out.

1999 cadillac eldorado v8
-----Answer-----
Try a can of dry gas in the fuel tank at your next fill up of gas.

Did you have HEAT problems BEFORE you had the oil changed and the fuel lines flushed out.

Because I see no link between the two.

Answer
If the check engine light is ON, Let's see what codes you have.

1. Ignition ON. Engine OFF.

2. simultaneously push and hold the OFF and WARMER buttons for 3 seconds and release them.

3. Press the Lo (fan speed ) button until ACM? appears.

4. Press the HI (fan speed) button until ACM CODES? appears.

5. Press the HI (fan speed) button until ACM DTC appears.

6. The codes will display. write them down EXACTLY as they display as if you were video taping them and let me know what they are.

To CLEAR the codes:

1. 1. Ignition ON. Engine OFF.

2. simultaneously push and hold the OFF and WARMER buttons for 3 seconds and release them.

3. Press the Lo (fan speed ) button until ACM? appears.

4. Press the LO (fan speed) button until ACM CLEAR CODES? appears.

5. Press HI (fan speed) in order to clear the codes. ACM CODES CLEAR will appear.