I think I should update some info without this appearing as an advertisement. A history package from GM Canada is $57.75 CDN in general, a rush fax the same day if you need to know because maybe you are purchasing the car, is $10.50 extra. If no info is found I usually still send you the technical specs at no charge because I feel you should have something to read at least, but a minimum fee of $15.75 applies if we have no info. A search involves someone sitting on a microfilm reader for up to an hour getting their eyeballs sucked out of their heads.
The hardest thing nowadays is dealing with old materials and equipment. The microfilm reader is over $1000 for a service call, toner is a killer for the old machine, and we must cover wages, computers, rent etc so unfortunately fees do apply, but I am sure that the increased value that has resulted from our packages on the many cars we have documented is well worth it.
It is difficult to answer your questions on the phone (905-440-7636) as we do many other things as well, but I do my best to respond to personal emails at george.zapora@cc.gm.ca
This is a great website and a good group, thanks for letting me be heard. By the way, on that JH engine ID, the vin sequence did not go as high as 355092 on the Chevelle line in 1969 at the Oshawa production plant.