Walt and everybody else,
Jon T. also brought the "S" code to my attention a number of years ago. Jon is one of the most knowledgeable and respected '65 GS enthusiast that I know. At that time, I had just become the new "Keeper of the Registry" paper records, now referred to as the Archival Registry. This presented an excellent opportunity to pursue the meaning behind all the trim tag codes. However, these Registry entries did not record the VIN or the trim tag information. I then tried to reconnect with those in the Registry to update their entry which would include the VIN and the trim tag codes. I mailed out about 75 letters to the addresses on hand. Many came back as 'undeliverable'. But I did get back about 35 responses with the trim tag information included. The "S" code appeared on all the Flint, Kansas City and Baltimore built GSs, except one. However, I later became aware that that one "GS" was a clone. The owner was already aware that his "GS" was a clone. When Chris Horn set up this website, it was a natural fit to have the '65 GS Registry as a separate section. I feel that it was not my place to transfer the paper Archival Registry records over to the online Registry without the current owner's specific permission, for privacy reasons. I think that about 30 or so have Re-registered their GS to the Website's Registry. The online Registry's newer entries are also consistent regarding the 'S" code appearing on '65 GSs. Is this data pool large enough to make an unequivocal statement?
Last month, Loren and I got together to look through those Archival Registry records to search for a common thread for the "P" and "R"codes. We were looking specifically at the Backup lights, Push button radio, Posi-traction, Clock, Rear speaker and Two speed wiper options. There were too many conflicting examples to verify these options as "P" or "R" codes. Loren currently has the paper Archival Registry to do his investigative research. Loren, anything new to add?
This is an excellent opportunity for everyone on this forum to check to see if their '65 GS has the "S" code and report back any exceptions or consistencies. It's also a great opprotunity to speculate what the "P" and "R" codes may be. Bear in mind that the Fremont built GSs will not have an "S", "P" or "R" code as they used a different coding system on their trim tags. Also to bear in mind, some of these codes are also shared by other GM models and years, but many are not.
John Egel