High pitch noise from speakers as i accelerate

[Lessor1007]

Hey guys, new here just bought an 03 Tahoe, got it home and now oddly enough getting interference in my radio. When i have my radio on and begin to accelerate a high pitch noise is comming through my speakers, very annoying to say the least and makes listening to radio a horribly experience, any imput would be greatly appreciated!

 

[ROBERTOcritser]

are you actually playing the radio and not a CD or tape? just to be clear....
and can you hear it if nothing is playing but the volume is up? (example - CD that is paused)

 

[Lessor1007]

Just put CD in and reved engine, did NOT make high pitch noise.
Switched to radio, and repeated and high pitch whine was back, heard through speakers. Any thoughts? Must be a radio ground or ?

 

[ROBERTOcritser]

i just googled your problem and it sounds like its your radio ground but I wouldnt know how to go about fixing it.

 

[yooformula]

odd, thats the same crap mine does but with the tape deck only.

 

[Lessor1007]

God it's loud, i turn the radio on at 35mph and all i hear is this loud ass whinning noise, soooo annoying, fun stuff, especially from a new vehicle.

 

[blueflamed03]

yep, ground on HU.......

 

[Thumper8302]

what if u have the radio off? when mine is off it whines.. could it be the alternator? its a 2001 just bought it a week ago.. im thinkin when the dealer detailed the engine and spayed their loved armor all down they didnt have the motor running and got that crap all over the place.... that was a big no no when i was a detailer at the car wash when i was in my teens. I know this in an old thread just came across it

 

[blueflamed03]

that sounds like an RCA or ground, stop by Audio Plus and have one of those cats take a listen to it.

 

[Thumper8302]

that sounds like an RCA or ground, stop by Audio Plus and have one of those cats take a listen to it.

lol naww im not goin to an audio shop.. damn thing is stock.... i noticed on one post someone said could be a bad diode on the alternator.. im gonna go that route