Pedal Vibration

The last few weeks, my SES light has been on, but I've seen no problems until today, (Searching for a problem, I finally felt one). While driving at 50 mph I could feel a slight vibration in the gas pedal, as I let off the gas, the vibration stayed about the same, but could be felt much easier. It quit after I slowed down to about 44 mph. Driving home I didn't feel anything at all. Not a major problem , I'm just wondering if it's something to look out for.

I'll put money on code P1870 and you are having TCC apply issues. See http://www.transmissionspecialty.com/parts/parts/77754-Combo.htm

You should really get the code read to see what it is.

//2000CAYukon

Yeah I'll have to get the code read tomorrow at AutoZone. Thanks for the link too, if that's the problem you just helped me out a lot. Thanks!