99 Suburban Seat Replacement

I replaced my suburban 1999 driver seat with a 95 seat, cannon plug and all hardware was the same, but when I start the 99 suburban the seat motor vibrates and buzzes for about 15 seconds then stops the seat operates normaly. It is not a problem with the seat, because it works fine in the 95 suburban.
The only difference is that the 99 seat had heated seats and the 95 does not.

Any Help?

Thanks,
Marty

Does the '99 have memory seats?