'05 silverado bose issue

Where would you start diagnosing the problem of no passenger side audio at all (crew cab)? I pulled the door panels and the speaker plugs/wires look fine. I assume it is a moisture issue with the Bose amp under the console?? Best resolution?

Have you checked the Radio's balance control?  

Yup, F+R, L+R, nothing coming out on passenger side front or rear.

Remove the Bose amplifier from the rear of the center console.  Remove all screws from the bottom cover.  T-15 in size.  Lift the circuit board from the heat sink.  Inspect both sides of the board.  If it is liquid damage, you will be able to identify the area which got wet.  You may be able to clean the damaged area and resolder the components.

I have bucket seats, is it the same setup as the split bench? If the circuit board is bad what do I need to do to just ditch the Bose amp system and replace the head unit? How do I get a new head unit to work with the installed speakers without the amp between them, or is that even possible. The Bose setup is a headache to say the least. Thanks for your advice.

i am an idiot wrote: Remove the Bose amplifier from the rear of the center console.  Remove all screws from the bottom cover.  T-15 in size.  Lift the circuit board from the heat sink.  Inspect both sides of the board.  If it is liquid damage, you will be able to identify the area which got wet.  You may be able to clean the damaged area and resolder the components.

The amp looks perfect, like I just pulled it from the manufacturer box, circuit board does too. I noticed if I turn the radio up to max with balance set to passenger only, there is a little bit of sound coming out of the speakers but its definitely weak as hell. Is it possible that it could be the head unit? Its the OEM unit.

Scope your inputs from the headunit, and the outputs from the amp.  You probably could get away with a meter set to ac voltage, and just test a workin channel at each location, and compare your results to the non working channels readings.  Should give you a pretty good idea where the problem lies. 

Some of those amps are volume controlled with data.  The signal wires coming from the deck are wide open and not controlled by the volume control of the radio.  Meter set to AC volts, lowest possible scale if it is not an autoranging meter.  Ground the black lead and red probe to each wire at the rear of the radio.  I do not know if there is signal on both positive and negative wires, or only on positive.  I do not know if standard GM wire colors apply at the rear of the radio.  Turn the volume up a bit and see if you have AC voltage on 2, 4 or 8 wires.  If you have readings on 8 wires that coincide with the audio being played, chances are you may have a bad amp.  If you only have voltage on 2 wires your problem is definitely your radio.  If voltage on 4 wires, more research is necessary to see if you have signal on both positive and negative wires. 

Here are my readings. Truck speakers DC Voltage Bottom Blk w/ wht stripe-0.003 Blue-6.81 Blk-6.81 Grn-6.81 Lt brn-6.81 Purple-0.010 Sm Orange-0.635 Top Lime Grn-6.82 Orange w/Blk stripe-6.82 Grn w/wht stripe-6.82 Brown-6.84 Gray-0.001 Pink-13.63 Big orange-13.63

i am an idiot wrote: Meter set to AC volts, lowest possible scale if it is not an autoranging meter.

With the DC readings you gave me, it appears that you should have signal on the 8 wires that read 6.82 volts.  With the meter set to AC volts and the radio volume set to a moderate listening level, does the AC voltage reading go up and down along with the peaks and valleys of the audio?  If you have fluctuating AC voltage on all 8 of those wires, chances are the amp is bad.  If there is signal on only 4 of those wires, the problem is probably the deck.