Hi All! I have a pain of a problem, my left front door speaker cuts out, if I pound the transmission tunnel it comes back on till I hit a bump in the road, I have 45s on the G so it hits the bumps a little hard. My question is, how do you get the AC vent assm. off to get to the radio? I have the service in CD but it looks more like a parts catalog than a repair manual. Anyone have an idea on this? TIA