39/39000 GM CERTIFIED USED 10/15/2002 10 miles 01/15/2006 39010 miles

This was in the vin check for the '03 I just purchased. Dealer made no mention of this warranty. Does this extend my 3 yr/ 36k mile warranty?
Thanks

Adds 3 months and 3,000 miles to the 3/36 factory warranty, part of being GM certified.