I tried to check if I can pull out PCM myself. What I found is the silver color box under the glove box with 3 or 4 cables connected. I took two nuts off on a right side of the box (or may be I should pull out 1 screw wich hold pastic bracket), and I think something keeps it on a left side (I can't see what it is, it's a/c assembly on a left side or something like that on a way). What is the right way to pull out the PCM of Seville STS 94?
Thanks for any help.

привет, мой друг! как дела?

Yes, you can remove the PCM easily. Kind of. :)
The PCM is the silver colored box. If you haven't taken out your glove box yet, that is held in with 4 or 6 screws, and lets you see everything a lot easier.

In front of the PCM is the AC programmer. I believe that you need to remove this before you can take out the PCM. There is a plastic shaft that connects to the top of the programmer that needs to be popped out. Then there are two screws on the right side of the black programmer assembly that need to be removed. The left side is held in with black plastic tabs so there are no screws on that side. This will come right out, and it has a bunch of vacuum hoses connected to it, so be careful, I guess.

The PCM is only held in with two nuts. The left side of it is held in with a rubber tab, so you need to wiggle the PCM out and to the right to get it out.

Good luck!

By the way, why the PCM? Is it faulty? Is it because of your coolant temperature sensor problems?

Thanks, everything Ok :)

Thank you a lot. I'll print your post and will try to do some work I guess.

I found the guy with same exect simptoms (getting overheat messages and temperature jumping on a display only if engine is actually cold). He changed the PCM and problem is gone. He trade in, so it was just around $85. He used the memory chip from previouse PCM.

Still, at first I want to check some wires.

to the benefit of folks trying to get the PCM out...once you have the Programmer down as described in the thread above do as ,, Take one screw (7mm head) holding the PCM bracket to the firewall with a long extension that could come out of the glove box since the g/box is removed...not the two 10mm head bolts screwed on to the PCM. Then
slide the PCM as far right as possible horizontally and in this position pull the PCM out (toward the back of car) at the side opposite of bracket and once that end cones out an inch or more lift the PCM verticlally upward (only 8th of an inch may be)...then u r scott free...should come out with no problem. Once you done this right post a thread ....if hv problem check out www.jorghenry.com :coolgleam

Thanks, jorghenry:
I replaced the PCM and now everything is Ok.
Thank you again.