How to remove the PCM harness??? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: How to remove the PCM harness???


WHYT LIE
08-24-2006, 05:50 PM
How do you remove the PCM plugs? I see the lever and I've pushed on it as far as I feel comfortable with. Do I have to pry on the plug to get it out? Or do I have to remove BOTH PCM plugs together? Or are they connected?

What gives?

I had a friend look up the "tach lead/output" and he gave me Pin 37, white wire for Engine Speed.

Hopefully I can get this rig on the dyno now...

WHYT LIE
08-29-2006, 12:57 AM
TTT

Nobody knows? :confused:

:help:

WHYT LIE
09-28-2006, 04:11 AM
I'll answer myself for any future searches.

Yes, just push on them, it takes a bit of force. The bottom plug (the smaller of the two) must be removed BEFORE the top (larger of the two) plug can be removed. GM didn't help any with their routing of the wires though.