Hey guys, I have a 87 GTA 700r4 all stock, I believe my TCC solenoid is giving me some trouble, I was gonna drop the pan and swap it out. I was also reading while in there do the 4th gear pressure switch. Im finding 2 different switchs a 1 prong and 2 prong, does anyone know which one I might need??? Thanks a bunch in advance

 

I guess you don't want to pull the pan and check? Could be multiple switches depending on type, so let's start here: what code?

 

7YMM 9 Is that what your asking?? Im sorry

 

If that's the code of your transmission, this is what you should find under the pan:

 

That was a big help, thank u very much!!!!!!!!!!