Where is the transmission control modual on a 98 buick regal?

Some one told me to look at the trasmission control modual to fix a code from OBDII P1652 on a buick regal. Still wondering how to fix the code and what to do on how to fix it. I went to Autozone it say replace relay cooling fan 2 i replace that and the light is still on.|||The trans control mod. isn't even tied into the code you have. did you clear the code? if you did and still came back on,check the 30 amp fuse for c2 fan or there is another relay that works with relay 2 thats c fan3 relay|||call a buick dealership|||If the relay has its 2 powers when the key is on then you have bad PCM ( computer ) That would be located either behind glove box or near passenger side strut tower under the hood.





I also would suggest a quality shop verify this.


Computers are expensive, not interchangeable from car to car and not returnable.