Radio in my Silverado doesn't put out sound anymore...

[Jugernot]

I have a 2004 Chevy Silverado with factory 6 disc in dash changer (which no longer works) and bose speakers and it no longer puts out any sound. I get no radio, door dings or Onstar as everything runs through the radio... I can however plug headphones into the rear seat jacks and get radio, so that works, just not sound through the speakers.

I've turned the speakers all the way up listening for a hiss or static and hear nothing. That make me tend to think it would be the amp that has gone out. This is a Bose setup, so the amp is seperate....

Anyway I can test the amp to see if it's the issue, I have access to it under my center console. Voltmeter?

Jugs

EDIT: Both fuses are good and I can visually verify the headunit is getting power (it lights, up, etc.).

 

[bruceb]

First step is check the fuse panel for any blown fuses that may say Radio or Amp on them.

 

[Jugernot]

Seeing as how I get power to the radio and get audio through the headphone jacks in the back seat, I'd assume the headunit is good. I'll check for the amp...

Joe

 

[Jugernot]

Both fuses are good and I can visually verify the headunit is getting power (it lights, up, etc.).

Anyone know a way I can verify function of the amp? Voltmeter?

 

[LTC8K6]

Wiring colors from another forum:

Radio Constant 12V+ Wire: Orange
Radio Ignition Switched 12V+ Wire: Class 2 Serial Data
Radio Ground Wire: Black/White
Radio Illumination Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amplifier Trigger Wire: Pink

Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green

Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue

left sub is
Lt Grn\Blk(-)
DkBlu\Wht(+)

Right sub is
Dk Grn (+)
Lt Blu\Blk(-)

 

[Jugernot]

LTC8K6, is that the wiring for the head unit or amp? WHat's my best way to test function of both?

 

[LTC8K6]

The head unit. I assume the sub wires are from the amp.

I guess you can start by checking that pink wire to see if the amp is being told to turn on.

This may be a CANBUS type system though, which would mean it would be difficult to check.

 

[JeffreyLebowski]

Originally posted by: LTC8K6
The head unit. I assume the sub wires are from the amp.

I guess you can start by checking that pink wire to see if the amp is being told to turn on.

This may be a CANBUS type system though, which would mean it would be difficult to check.

It's a Chevy Radio, they're all pains in the ass. Everything runs through them so it could be any number of issues causing the problem.