2005 Yukon XL SLT - box in engine bay

[mountie]

What is this box for? I'd rather not pull stuff apart to find out. It's below/beside battery.

Still learning what's under the hood.

 

[Scottydoggs]

thats where the pcm lives.

 

[mountie]

Ahhhh....... Ya mean, it's not buried somewhere behind the engine? How nice....

Thanks

 

[Scottydoggs]

i had to pull mine out, then i add two wires to one of the pcm plugs for my wide band.

just cause you can see it dont mean its easy to get out lol its tighter then you think.