[JoeC]

Chevy did not keep the records on purpose but there may be some records that were put in storage and still exist simply because they were never thrown away. There may still be old storage rooms all over the country in old plants. Al Colvin found all the records for M22 transmissions shipped out of Muncie from 1965 to 1974. The records were in an area above the plant enclosed by chicken wire. He said there is also a similar area in the Central Office Records Retention Area.
How did Jim Mattison get all the Pontiac records?
Where did they find the old Caddy records?
I still have a little hope because I am amazed about old records that keep showing up on the Internet.
An example is Ellis Island in NY. More than 12 million immigrants passed through between 1892 and 1954 and they still have the records. They have them on a web site where you can search for your relatives names. I found some of my relatives on there and it even had the amount of money they declared when they arrived.