1. T

    Onstar - VHF?

    New to the forum, so forgive me if this is misplaced. I will soon be installing a Motorola Astro Spectra in a 07 Silverado (NNBS). I am really avoiding drilling the cab roof to install an antenna, and was hoping to find some kind of "undercover" antenna that experienced users would...
  2. poltergeisty

    ON-Star Off-Star?