The skip shift eliminator could be the culprit, although I am pretty sure it would be a rare case if it is the cause.
Do you have a multimeter?
If so set it to ohms and see what the resistance of the eliminator is, should be around 2,000 ohms, inspect its wiring also.
I have never installed one, but if possible can you remove it to see if the problem persists?

I have a skip shift eliminator on my 99 T/A. Just unplug it from the wire harness and plug the wire harness back into the transmission.

the eliminator was the problem. I plugged the harness in and no blown fuse. the ohm reading on the eliminator was 29.1 ohms, I guess it'* bad thanks for your replies.
William

Glad to hear that was it, and you were able to remove it easily, now if you put one back on you know what it should be ohms wise, which is 2,000 to 2,200 ohms.
Thanks for updating us on the issue, and I am always happy to help.

why the resistor? does the computer throw a code if its just unplugged?

I don't know, I took the eliminator out of the loop and plugged the back into the harness and everything is fine except for the annoying skip shift is back. I'm not sure if the computer will throw a code if the skip shift solenoid is left disconnected. thanks talk later.