WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
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.
Fig 1: Installing Front Auxiliary Blower Motor Switch To Console