Hi Pete, it could be the amp under the front passenger seat.
They have a corrosion problem so if they are in contact with water( say from a kids drink) the corrode and can pack up all together.
Just like mine has !! however ive just lost the bass speakers in the doors.
If this is the problem a breaker will charge around £150 for a second hand unit or they are around £500 from a main dealer.
The other route is a repairer in usa $50 ish you send the old unit they send you back a refurb unit ?? seen on ebay put in saab 93 amp.
Good luck and happy new year
Mj, January 2010
