Here is a cover blank on Ebay. I also had the hole, there was discussion on this forum that many Blazers the cover fell inside the console. That is where mine was. I mounted a 400watt 12V-100v AC inverter from Harbor Freight under the front part of the center console behind the front console mount and wired in an AC outlet in the blank hole in the back of the center console so I could have AC power. here is an EBAY link to a cover
http://cgi.ebay.com/ebaymotors/98-04...s#ht_500wt_976