I have seen a sticker on some GM cars that lists all the codes for all the options that particular car has. I am shopping for a used Metris and I would like to know if they have such a sticker. I found the online "2016 Metris Draft Equipment Book" which explains the optional equipment and shows the 3 character code for each option. (I presume "draft" means it might not be complete or accurate, but I did not find a Final Equipment Book.) I am particularly interested in the H09 "enhanced power" for the A/C option because I live on the steamy Gulf Coast. Is there a sticker that lists the optional equipment? If not, how can I tell if a used Metris has the H09 option. I have looked at the online owner's manual and it shows how to control the manual temperature control A/C system and the automatic temperature control system. I found no information about enhanced power there and I expect that H09 is a separate option that could be on the manual temperature control system or the automatic temperature control system.