Canadian code?

[Canuck]

Phil
That code appears on documentation from GM canada on cars sold new here. There was nothing physically different about the cars. I think this code was for Canadian Documentation, as in the warranty booklet,owners manual,different POP and in 70 and up models an Oil Change sticker on the valve cover advising of different requirements in a colder climate(like Michigan and Minnesota dont get cold.) I have letters from GM for 1971 cars that show W84,additional fuel and Z49,mandatory Canadian Base equipment (documentation).
The crew at the GM vintage services tend to use current discriptions on some of the older option codes.
One documentation I have shows a Y62 and this is on a car with special order paint.