Silverado 2010 frame dimensions

I am straightening the frame on my 2010 Silverado extended cab. I found a document put out by GM that has frame measurements (http://www.gmupfitter.com/publicat/2010_BB/2010_LD_FS_CK_PU_071712.pdf) but it does not give side to side measurements from center line. Does anyone know where I can get these measurements online? I need them for the front section. Thank you!

Any body shop with a modern frame machine can print up that info.