No sounds from radio

Tiny
KMULLEN
  • CHEVROLET SUBURBAN

My radio turns on all the dials work including the volume, but, I can't hear anything. It was working when I was in the car and I came home for a few minutes got back in and guess what no sound. Any ideas?

Do you
have the same problem?
Yes
No
Monday, November 5th, 2007 AT 8:37 PM

7 Replies

Tiny
DENNYP
  • EXPERT
  • 1,864 POSTS

Subject: Diagnostic For No Sound From Speakers But Radio Display Is Operative - keywords amp amplifier audio inoperative mute off on speaker voltage volume.

Models: 2003-2006 Chevrolet Avalanche, Suburban, Tahoe

2007 Chevrolet Silverado Classic

2007 GMC Sierra Classic

2003-2006 GMC Yukon, Yukon XL

2004-2007 Hummer H2

With UQ7 without Y91

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
This information is in addition to the normal no audio diagnostics which includes checking for shorted speakers or speaker wires.

Recommendation/Instructions:
For complaints of no audio from vehicle equipped with a non-class 2 amplifier, perform the following checks to determine if it is a radio or an amp issue. Do these checks with vehicle running, radio on and amp plugged in.

Check for audio at the Rear Seat Audio controls through the head phones. If there is, then the radio is producing audio.

Check pin B3 (switched 12volts) for 12 volts. This is a radio output that tells the amp to turn on. It should show 12 volts, if it does not, and then radio B3 pin output is not operating properly. This could be caused if the radio is not programmed correctly or a circuit concern.

Check pin B6 (amp mute) for 0 volts to 5 volt. If the voltage is between 0 and 1 volt this tells the amp to mute and play. If it shows between 3 and 5 volts this tells the amp to mute and stop playing. This could be caused if the radio is not programmed correctly or a circuit concern.

If the above steps indicate that the system should be playing then check for power and grounds to the amplifier and if okay, replace the amplifier.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

Changes are the amp went bad in the radio and it needs to be replaced.

Was this
answer
helpful?
Yes
No
+1
Monday, November 5th, 2007 AT 9:58 PM
Tiny
WAYNO
  • MEMBER

Have you used the balance and fader controlls to single out each speaker. Could be a short in one of the speaker wires. Usually when this happens you will just get a staticy distorted sound but with these newer factory stereos there could be an internal breaker that shuts off the speaker output when a short is detected. May not be the case but it couldnt hurt to check it out.

Was this
answer
helpful?
Yes
No
+1
Monday, November 5th, 2007 AT 10:10 PM
Tiny
LARRYLODEN
  • MEMBER

I'm having this issue. Non of my speakers work and my head phone plugs in the back don't work, not even with the DVD player playing. DVD player plays but get no sound. I checked the radio and hooked a separate speaker to it and it is working. It is a aftermarket CD player and I just bought the vehicle so I'm not familiar with it or what to do from here. Hasn't worked since I bought it

Was this
answer
helpful?
Yes
No
+8
Sunday, January 26th, 2014 AT 6:54 PM
Tiny
2CARPROS KEN
  • ADMIN
  • 9,526 POSTS

Check the fuse in the under hood fuse panel. If that's okay these radios have a problem with the internal amplifier going out which will cause the problem you are describing, you must replace the radio to fix it.

On some models they have a speaker reply but for yours it doesn't seem to have it.

Was this
answer
helpful?
Yes
No
+3
Sunday, April 10th, 2016 AT 6:25 PM
Tiny
SHOCK1999
  • 1999 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 260,000 MILES

When you first turn it on it has sound for a few seconds then nothing, what could be the problem.

Was this
answer
helpful?
Yes
No
+2
Friday, December 23rd, 2016 AT 12:00 PM (Merged)
Tiny
MHPAUTOS
  • EXPERT
  • 31,231 POSTS

Sounds as if the problem is in the radio it self, I would remove and first check to see if the power supply is dropping out first.

Was this
answer
helpful?
Yes
No
+2
Friday, December 23rd, 2016 AT 12:00 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
  • 28,568 POSTS

Unfortunately you're tied to the dealer for radio problems. In an effort to increase profits at their customers' expense, they stopped allowing us to buy radio service manuals after 1994. You have to go through the dealer and one of their two grossly over-priced repair centers.

Was this
answer
helpful?
Yes
No
+1
Tuesday, December 27th, 2016 AT 9:57 AM (Merged)

Please login or register to post a reply.

Recommended Guides