fredk

I have a 88 cadi sevile with 88K miles it just started not shifting into 2nd in the morning for the first few miles then it will not shift into 3rd for another few miles, I have been told to look for a vacume leak but that does not sound right as when it warms up it shifts fine. Could this be the trans modulator getting fluid in it and then clearing it self? Any help would be great.
Thanks