Expansion plug

[M109RdR]

Hi guys, nice to be here and read about the different things we all have to say about our cars. I belong to many forums and find them to be extremely helpful and interesting. Now, I need some help with my 03 Ext.

I bought this not long ago for a steal of a deal. That's because the expansion plug was missing. I thought, no problem, easy fix. Well, maybe not. I have searched every end of the Internet to try and gain the process of replacing it. The plug is between the firewall ad the engine. There is not enough room for me to even get my hand back there. Using a mirror and light, I see the hole.

What is the best way to get access to this? Pulling the motor? , removing the top Alf of the engine? I am at a loss. I can't even find documents to tell me the size of the plug.


Thanks for reading. Oh yeah, it's a 4.2 motor.

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