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Rod · 11-07-2005, 02:06 AM

You have any other sources that show vins with the 20 decoding to the gvw range..Thats probably the only one I've seen.

Pauls vin decode , well model decode shows the box type listed as OD.

So I assume the box types are done the same way in the vin.

I have done some assuming in the vin decodes I do also..but it seems the only way it works. A couple books that show cab to axle dimensions in model numbers decodes into the vins. When I post the replys I dont think I've been wrong in what type truck it is ..as in long box or short box... and GMC or Chev can be determined by the cab to axle designation numbers.

KM1590DKPC1226A would be a GMC while a vin of KM1090DKPC1226A would be a Chev, both having the same wheel base for example. Both having a cab to rear axle dimesion of 54 inches.

I agree that there must have been some engineering versions that maybe made print but not assmbly line. I've never seen a GMC vin like the scan I posted from the 67 GMC Shop manual.
My 67 GMC owners manual shows the vin decoding example using number
C9S1090371100025 from a Sept 1966 Oshawa printed first edition.

11-07-2005, 02:06 AM	#15
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Re: Oddball ID number You have any other sources that show vins with the 20 decoding to the gvw range..Thats probably the only one I've seen. Pauls vin decode , well model decode shows the box type listed as OD. So I assume the box types are done the same way in the vin. I have done some assuming in the vin decodes I do also..but it seems the only way it works. A couple books that show cab to axle dimensions in model numbers decodes into the vins. When I post the replys I dont think I've been wrong in what type truck it is ..as in long box or short box... and GMC or Chev can be determined by the cab to axle designation numbers. KM1590DKPC1226A would be a GMC while a vin of KM1090DKPC1226A would be a Chev, both having the same wheel base for example. Both having a cab to rear axle dimesion of 54 inches. I agree that there must have been some engineering versions that maybe made print but not assmbly line. I've never seen a GMC vin like the scan I posted from the 67 GMC Shop manual. My 67 GMC owners manual shows the vin decoding example using number C9S1090371100025 from a Sept 1966 Oshawa printed first edition.