Cadillac Repair: stalls sometimes, throtle body, carbon buildup

Question
QUESTION: cleaned out the throtle body cleared codes and this is what i get   so21 so44 so55 anything to do with the problem im having and its sends the code that the engine stalled

ANSWER: Try clearing the codes via the climate control panel.

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QUESTION: yeh did all that cleared all the codes and still dose it thinking maybe something to do with fuel its running at 35psi
and dips every time you hit the throttle its starting to get frustrating

Answer
OK, recheck the computer to see if any codes came back and let me know what codes came back if any and if they are HISTORY or CURRENT codes.

If there are NO CODES, Your fault may be a residue buildup within the throttle plate area and or a carbon buildup within the EGR passages.