98PA unknown driver code and car will not start

I replaced my rear shocks and first test drive all checked OK. After securing all items and wanting to check again car would start and dashboard states unknown driver, do I need to reset the computer and if so how? Any help or advice would be greatly appreciated.

TIA

Slap the dash and ask it "who's your Daddy?" :lol2:

Seriously, did you disconnect the battery or anything? Key dirty?