2007 Sunurban buzzing noise thru rear speaker?

60

Asked by AKCrewdog Sep 19, 2012 at 03:45 PM about the Chevrolet Suburban

Question type: Maintenance & Repair

I've got a buzzing feedback thru what seems to be the rear speakers and sub on my 2007 Suburan. It happens
when the radio or the trun signals are on or the backup sensors go off. It doesn't matter if the engine is on or off

16 Answers

69,015

Its an electrical interference. Have you ever been near one of those big electrical junctions by the road that constantly buzz or hum. All electricity causes some sort of magnetic field and a magnetic field can cause electricity. Its how starters and alternators work. The electricity in the wires running to the back of the car is causing a magnetic field. The speaker wires are close enough that the magnetic field is creating electricity in the speaker wires which is amplifying into a sound.

3 people found this helpful.
60

Well I t just dtarted after I got it out of the body shop. the onlt thing that was removed was the hood to repair three dents and I think they removed the lift gate for the same reason. So I'm not having to spend a lifetime chasing wires, do you have any suggestions?

3 people found this helpful.
69,015

If you have the money to throw at it start by replacing the relay its inexpensive anyhow and if that doesn't fix it replace the switch and if that doesn't fix it take it to soneone who knows how to trace electrical problems. Without it being a constant issue it will be even harder to find also. The only shortcut when fixing electrical is replacing the least expensive and most logical part first. Since there are only 2 possible culprits it will be a little bit easier. I truly hope one of those two fix your issue.

60

Well now it’s doing it all the time. When I accelerate it accelerates it’s just more pronounced when the radio is on and the volume is up just a hair.

2 people found this helpful.
69,015

For some reason my last answer got put on the wrong post. That answer was for a gentleman's headlights. The only thing you can do is trace the speaker wire it quite possibly got nicked and is now touching the metal. When they had the rear tailgate off something got moved or a wire is lose or bare wire touching bare metal. Only thing you can do is get in the back, pull the panels off and start moving wires until it stops.

69,015

There won't be a diagram showing you where the wires run unless you get lucky and find something done for educational purposes. The speaker wires run through a wire loom that runs throughout the truck. The speaker wires are run through the same loom as the rear lift gate wires. The ones for the wiper, third brake light, any lights on the inside of the gate, etc. They take the vehicles wires and run them all together and as they get near their destination they branch off. Only thing you can do is remove the panels covering the speakers and trace the wires back through the loom and look for signs of tampering. If it was in the body shop for dents then they probably removed those panels to gain access to the inside of the body to tap out the dents.

1 people found this helpful.
60

The litigate was the only thing removed and the body shop is claiming everything (all the wiring) was just a connection of male to female wiring adapters. Basically they claiming they did nothing wrong.

1 people found this helpful.
180

I had this same problem on my 07 suburban, it took 2+ years to figure it out and the noise got worse over time. they fixed my rear audio control in 2011, now the noise has started again---I have called GM insisting on a recall of a bad part--you all need to do this so they recall the part. one person isn't enough

1 people found this helpful.
485

I have the same problem in my Suburban 07. It started after I serviced central console and reconnected the main plug. Definitely it is a problem with rear audio control unit.

1 people found this helpful.
20

I have an 08 suburban that is making the whinning sound. Has anyone figured out exactly what is causing it?

2 people found this helpful.
485

So far no solution to this issue is available. I disconnected the rear audio control unit but the sound is still there. I am working on it...

485

I tried a new thing. I gave a strong negative directly from the battery to car body. The noise has reduced considerably but definitely still there. Here John has a point...

1 people found this helpful.

I have the same problem in a 2005 GMC Envoy. It only in the right rear speaker. Even with the radio shut off the noise is still there.

40

I had an intermittent buzz (sounded like alternator noise) through my back speakers. If I smacked the center console it quit. Then I found that it could be the rear AC/radio control unit. Before I bought a new one, I removed the control unit and found that it is two circuit boards screwed together with a multi-pin connector. That connector was somewhat loose. So I unplugged it from both circuit boards and then plugged them back in tightly. Reinstalled the unit adn no noise since then. Glad I save $120+!!!

4 people found this helpful.
10

Where is the control unit that you replaced jnssctt?

1 people found this helpful.

Your Answer:

Suburban

Looking for a Used Suburban in your area?

CarGurus has 511 nationwide Suburban listings starting at $11,950.

Postal Code:

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    3,080
  • #2
    JimO65
    Reputation
    2,390
  • #3
    Rowefast
    Reputation
    2,130
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Yukon XL
11 Great Deals out of 725 listings starting at $1,000
Used Chevrolet Tahoe
18 Great Deals out of 859 listings starting at $9,980
Used Ford Expedition
18 Great Deals out of 682 listings starting at $5,650
Used GMC Yukon
17 Great Deals out of 941 listings starting at $5,998
Used Cadillac Escalade ESV
5 Great Deals out of 159 listings starting at $11,990
Used Cadillac Escalade
30 Great Deals out of 535 listings starting at $1,000
Used Chevrolet Silverado 1500
222 Great Deals out of 9,112 listings starting at $2,900
Used Toyota Sequoia
4 Great Deals out of 49 listings starting at $12,950
Used Lincoln Navigator
255 listings starting at $17,990
Used Ford F-150
363 Great Deals out of 12,802 listings starting at $599
Used Chevrolet Traverse
33 Great Deals out of 664 listings starting at $4,995
Used Chevrolet Silverado 2500HD
39 Great Deals out of 1,814 listings starting at $1,000
Used GMC Sierra 1500
182 Great Deals out of 9,044 listings starting at $1,000
Used Toyota Sienna
36 Great Deals out of 578 listings starting at $2,499
Used Dodge Durango
65 Great Deals out of 1,994 listings starting at $7,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.