GMC and Chevrolet VIN and Model Number Decoders with pics.

[tobaccofarmer]

Guys I am trying to decode this VIN-CCE242Z129155 the problem is this truck is 4x4 and the guy who did the resto on it said everything sure seemed factory that pertains to the 4x4 front diff etc etc. Is the only possibility that the cab and or frame have been swapped? its a 3/4 ton 4x4 cheyenne super so a K20 but not according to the vin in glove box? The vin decoder is excellent and according to this it is a 2 wheel drive so Im a little confused, especially when guy tells me nothing shows signs of it not being factory? Thanks for this excellent forum