I have a slight annoyance. When I am on a steady incline and my rpm's stay at 25 constantly it triggers the SES light. I'm not sure but I think it is a vacuum leak. It has no signs of any gasket leaks. So any info you have woud be appreciated.

Addl info:
the SES resets after about 3 additional trips.
it has 110,000 miles.

Could be any number of things.
Take it to AutoZone and have your code read for free. Don't buy any parts yet. Post back what they tell you.