G7sus

From the original post I thought you wanted a Gsus2.  From Noteboat's teachings I believe that means you can't have any B notes (the 3rd in the chord) or it's just a Gadd2.  Therefore we could have:

G7sus2   (g-a-d-f)
1e: --1—(f)--index
2B: --X—--
3G: --2—(a)--middle
4D: --0—(d)--
5A: --0—(a)--  
6E: --3—(g)--ring

or a G7add2 would be easier like:

G7sus2   (g-a-b-d-f)
1e: --1—(f)--index
2B: --0—(b)--
3G: --2—(a)--middle
4D: --0—(d)--
5A: --0—(a)--  
6E: --3—(g)--ring

I think earlier many members were talking about G7sus4 and I came up with:

G7sus4   (g-c-d-f)
1e: --1—(f)--index
2B: --1—(c)--index
3G: --0—(g)--
4D: --0—(d)--
5A: --3—(c)--middle  
6E: --3—(g)--ring

Now if we want just a Gadd4 it would be easier like:

G7add4   (g-b-c-d-f)
1e: --1—(f)--index
2B: --0—(b)--index
3G: --0—(g)--
4D: --0—(d)--
5A: --3—(c)--middle  
6E: --3—(g)--ring

Dead on, Corbind!

His original post just said G7sus... in the absence of a number, it's usually understood that it's a sus4.  Sus2 chords are something I've only seen in the past few years, but they make logical sense with chord theory, I suppose.

When we start altering chords, we can come up with things that might have better names; a C7sus2 would have C-D-G-Bb.  You could just as easily -- and often more properly, in harmonic terms -- call this a Gmadd11 (G-Bb-D-C) or a Bb6/9 (Bb-D-G-C).  It all depends on the context of the progression.

I often find that guitar music mis-names chords harmonically, perhaps to make them easier to understand, perhaps because of transcriber ignorance or error.  At any rate, G7sus2 is probably less daunting to a beginner/intermediate than Gm add 11.  Just be aware that calling a chord by a different name can get in the way of understanding harmony when you're ready to study it!

Tom

Dominant is a fifth up from the root
Subdominant is a fifth down from the root