98 TA Transmission
 

Hi Folks, I need some help. My 98 Trans Am through a check engine light, I scanned and it said "shift soleniod A circuit electrical" . The trannie started to hunt up and doun as it coasted[:o]. any ideas where this is at and what to do with it? thanks for any help.:)

98 TA 5.7/ AT, RED 60,000mile