Buick 2004 Rendezvous - Manual (Page 272)

Integrated Windshield Antenna
The antenna in your vehicle is a very thin, metal layer in
the windshield. If you look near the edges of the
windshield, you can see the outline of the antenna. The
connector is at the top of the windshield, where the
headliner ends.
If you experience difficulty with remote transmitters,
such as a garage door opener, try pointing the device
through the very top of the windshield.
XM™ Satellite Radio Antenna
System (48 Contiguous US States)
Your XM™ Satellite Radio antenna is located on the roof
of your vehicle. Keep this antenna clear of snow and
ice build up for clear radio reception.
The performance of your XM™ system may be affected
if your sunroof is open.
Loading items onto the roof of your vehicle can interfere
with the performance of your XM™ system. Make
sure that the XM™ satellite antenna is not obstructed.
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