GMC VIN DECODERS
The majority of 1967 GMC's assembled at the Pontiac assembly plant appear to be only the 7 Digit version VIN
We have only seen 1-13 digit VIN for 1967 for the Pontiac assembly plant and dozens of the 7 digit VIN.
All Other Assembly Plants in 1967 appear to have used the complete 13 digit VIN sequence.
Canadian GMC VIN Decoder
GMC Model Number Decoder