Hi,
I have a 1978 K5 2WD (yes, 2WD) and trying to decode the vin numbers last set of numbers. The first 3 are CCL ( which decodes to Chevrolet, Conventional and 350 engine). The last 6 are 195652.
I also would like to get the RPO codes to this vehicle. I looked on the drivers door jam and in the glove box, where they should be, as stated on a web site. Nothing. Where else can I look to find them?
Thanks in advance!

 

Last 6 are only a sequential number. RPO codes on 78 are in the glove box. If the RPO code sticker is missing you can look them up by the VIN at places like https://www.compnine.com/vid.php
But 1978 has less than 17 in serial #. You get the idea. Find one that works for your VIN and gives the RPO codes. Maybe this one? https://www.decodethis.com/