MY 1972 chevelle still had the instructions to use the seatbelt on the driver's side visor. It's a little paper donut that slips over the shade, and was 32 years young when I sold it, with original papers. Out of the 6 vehicles that I've ever owned, my 1989 suburban didn't have the book. My 1990 jimmy came with a folder of receipts and printouts from various shops. Got my alternator replaced 4 years after install, cuz I found the receipt :-)