Well the thing is about 3 months ago my car transmission was stuck in 4th gear it threw afew codes(Dont have them on hand right now) at first the transmission shop said it was the speed sensor located in the transmission but after further investigation it turn out to but a $56 a/t relay now 3 months down the road the same thing is happening..

The relay was blue and white and i wondering what could keep blowing it, if in fact this is the problem again?

Also where is it located? and where can i buy it?