I just looked it up myself, the code would have been
G21 - CLEAR - ALL WINDOW Use This Code When Air Conditioning is Ordered and Tinted Glass is Not Desired
So it appears to me that it is on the fender tag (G31). Would that mean it was an A/C car ? Why else would this be on the fender tag ? Or my eyes are lying to me . After all my eye's aren't what they once were