need some audio help

[rowhard]

If it was necessary for the shop to remove the interior panels in the cargo area (which it sounds like it was if the antenna was disconnected at some point), it's possible that the connector for the noise suppression filter didn't get reconnected when they were putting things back together.

In the ground distribution section of the electrical troubleshooting manual, a white connector (# R-22) for a noise suppression filter is shown as being located at the "center of rear roof panel, behind trim panel".

think you might of just hit the nail on the head. page 201-11, plate 72 in the manual shows it. Thanks again