It is a Word document. Can't necessarily assume your truck was built on a particular date just by looking at the others around yours. I have found some that are out of sequence. To be certain, you can either purchase the Build Certificate from SVT or pm me with your VIN and I can get it for you.the document won't open for me , goes into my printshop program. Anyway, truck # 2377, DSG, Texas. I found two other trucks on here , one just befor and one just after mine, both built 3/13, so assume mine was too.