1996 k1500 frame work: help

[keckerjr]

I am installing an oem spare tire crossmember. There is a square hole cut into the one end.
Since I'm unsure of the orientation, does it matter whether this lands on the driver's side rear or passenger side forward ?
What is its purpose ?
Bottom line, will the crossmember fit only one way, cause it looks pretty symmetrical to me.
Tom

 

[Caman96]

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[keckerjr]

I am installing an oem spare tire crossmember. There is a square hole cut into the one end.
Since I'm unsure of the orientation, does it matter whether this lands on the driver's side rear or passenger side forward ?
What is its purpose ?
Bottom line, will the crossmember fit only one way, cause it looks pretty symmetrical to me.
Tom

Well after talking with a tech from Rust Buster this afternoon (thanks Jason) I got my answer: the square hole belongs on the passenger side (facing the front cab).
I still don't know the purpose for it.