XM and gps location on Trailblazer

[jem233]

Trying to locate where the gps antennae for the navigation radio is located at as well as the xm radio, would the xm be in the same location as the Silverado?

[camaudio]

On the passenger side, UNDER the glove box, there is a panel held on by two 5/16s (i think) hex screws, take them out, the panel will drop down, and the XM module is mounted to that