I have a 2009 Pontiac Vibe GT with the optional 7 speaker 320 watt Monsoon radio system. I have had no volume in the rear of the vehicle for a month or so and finally looking to get this fixed. The Toyota head unit is working fine as as as I can tell and the fader and balance are set correctly. I'm looking for solutions. My first guess is a blown amp fuse, but can not find much help. Help.
My first guess is a blown amp fuse, but can not find much help
The amp is protected by a 20A fuse (shockingly) labelled "AMP" in the under-hood fuse block.
The amp itself is located under the passenger seat.
However, since the front speakers are working, then the amplifier is probably fine.
It sounds to me like the wiring harness for the rear speakers is faulty.
