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.
Open and support the hood.
Remove the protective covers from the underhood fuse block.
Use the J 43244
in order to remove the high beam relay (1) from the underhood fuse block.
Fig 1: Locating High Beam Relay In Underhood Fuse Block