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					Originally Posted by  TJ's GMC
					 
				 
				That's really weird guys cause according to this sight's vin decoder it says 15 means 1500 series 1/2 ton and 02 mean 127 inch wheel base. Thanks for the help though....what's the difference between the 1500 and 2500? 
			
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 In 1967 the model number 1500 became the new designation for half ton models.  2500 became the new designation for the 3/4 ton models.  Prior to that (for 1966 and earlier GMCs) 1000 was the designation for half tons, 1500 for 3/4 tons, and 2500 for one ton models.