PCM Question

[caveman]

Doe anyone know what the rubber peice is on the back of our PCM's? It appears there is a stud on the firewall that pushes it in intentionally?

 

[rottenronnie]

Doe anyone know what the rubber peice is on the back of our PCM's? It appears there is a stud on the firewall that pushes it in intentionally?

I don't have one on mine. So I do not know.
I've got 3 pcms in stock, no rubber to be found on any of them.
Hmmmmmmmmmmmmmmmmmmmm

 

[caveman]

On your truck or your home computer?

On the back of the my trucks computer (04 RC)

 

[caveman]

I don't have one on mine. So I do not know.

Really? That's odd. I have 3 PCM's here and they all have it. Attached is a picture of the grommet and the stud.

 

[rottenronnie]

Really? That's odd. I have 3 PCM's here and they all have it. I'll upload pictures shortly.

I don't think I've even seen one like that (not that I go looking) but, once again- Hmmmmmm
The pcm/ecus aren't all that powerful but they do get toasty, so I'd guess a vent of some kind for moisture control.

 

[rare03srt10]

I have two PCM's (05 qc) and neither of mine have that either....

 

[VPRPWRD]

Possibly a difference between RC and QC pcms? I am unfamiliar with this so can't really lend any help here.