GM Service Manual Online
For 1990-2009 cars only

The antenna is located in the windshield. It is a very thin metal layer that outlines near the edges of the windshield. The connector is at the top of the windshield, where the headliner ends. For proper radio reception, the antenna connector at the top of the windshield needs to be properly attached to the post on the glass.

If difficulty with remote transmitters is experienced, such as a garage door opener, try pointing the device through the very top of the windshield.

Notice: Using a razor blade or sharp object to clear the inside windshield may damage the antenna. Repairs would not be covered by your warranty. Do not clear the inside windshield with sharp objects.

Make sure the inside surface of the windshield is not scratched and that the lines on the glass are not damaged. If the inside surface is damaged, it could interfere with radio reception.