WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cooling Fan Relay
Courtesy of GENERAL MOTORS CORP.
Remove the cover of the under hood fuse block.
Remove the blower motor relay (1) from the under hood fuse block (2).