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: Auxiliary Blower Motor Switch
Courtesy of GENERAL MOTORS CORP.
Connect the electrical connector to the front auxiliary blower motor switch.
Install the front auxiliary blower motor switch to console.
Press the front auxiliary blower motor switch into the console.