TCC and Pressure switch part numbers

[GullsGN]

Well, I am finally going to change the tranny fluid(you don't want to know how many years it has been). While I am in there, I figure it is a good time to change the TCC solinoid and the 2 pressure switches as a little preventive maintanance. Are these parts a dealer only or are they to be had at the after market stores, NAPA, Autozone, etc. Part numbers?? When I do remove these parts, there isn't anything that I have to watch out for, like little balls or springs & things, is there? Thanks a bunch , guys.

Steve

 

[copo]

I did mine (87 GN) last summer due to my tranny not staying locked in 4th.

Part from GM still. I kept the wrapers with the part #'s
1 Filter Kit - 8639951
2 switches - 08683502
1 solenoid - 08639900

Straight forward. Drain the fluid when cold.