Motor noise

[Radz156]

I have motor noise coming from front driver side door speaker cannot figure out why. 2018 Yukon SLT

 

[OR VietVet]

Welcome to the forum. Can you give a better description of that noise? Inspected speaker connections? Swap both front speakers to see if noise follows speaker? Noise changes with engine rpm?

 

[Radz156]

Replace front left speaker. Still does it. Winding noise with driving. Happens when acceleration and driving at a steady speed. Kinda of stops when you’re let off gas

 

[OR VietVet]

I would check the speaker wiring where the pass thru is at the door jam.

 

[Radz156]

I would check the speaker wiring where the pass thru is at the door jam.

Service department can figure out. Thanks

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

Sounds like you have a ground loop situation. It is odd that you hear it only on the front left speaker. Do you get the same sound on the rear left speaker?

 

[Radz156]

No, sound for everything come from driver side front. Blinkers , etc.

 

[OR VietVet]

Blinkers? Where did that tidbit of info come from?

 

[Radz156]

All Interior sounds come from that speaker. Came from dealership and also audio specialists

 

[Joseph Garcia]

No, sound for everything come from driver side front. Blinkers , etc.

Just to reconfirm.... So, none of these sounds are coming from the left rear speaker? Just the front left speaker, and no other speakers?

 

[Radz156]

Yes, just front driverside

 

[Joseph Garcia]

The sound that you are referring to is typically 'injected' into the low power side or input side to a power amp, where the input signal voltage coming from the preamp is low enough to be impacted by other transient electrical fluxes in the truck's electrical system.

Then, (1) possibly, it could be a loose connection on the wiring plug coming into the power amp's low side input connection from the preamp for the front left channel.

(2) If you have no power amp, and are simply running off the head unit's internal power amp, then I believe that you have a failure in the circuitry within the head unit.

 

[Radz156]

The sound that you are referring to is typically 'injected' into the low power side or input side to a power amp, where the input signal voltage coming from the preamp is low enough to be impacted by other transient electrical fluxes in the truck's electrical system.

Then, (1) possibly, it could be a loose connection on the wiring plug coming into the power amp's low side input connection from the preamp for the front left channel.

(2) If you have no power amp, and are simply running off the head unit's internal power amp, then I believe that you have a failure in the circuitry within the head unit.

I have power amp. Will check. Thanks

 

[Joseph Garcia]

I have power amp. Will check. Thanks

OK. You have a power amp. Then, be sure to check the connectors on both ends (head unit end and power amp end) to ensure that the connector are fully plugged in.

If both connectors are fully plugged in, then the next step that I would recommend is to use an ohm meter to check the continuity of both leads of the connector wires that connect the front left output of the head unit to the left front input of the power amp, to be sure that there is not a break in the either wire.

 

[Radz156]

OK. You have a power amp. Then, be sure to check the connectors on both ends (head unit end and power amp end) to ensure that the connector are fully plugged in.

If both connectors are fully plugged in, then the next step that I would recommend is to use an ohm meter to check the continuity of both leads of the connector wires that connect the front left output of the head unit to the left front input of the power amp, to be sure that there is not a break in the either wire.

Thank you

 

[Raymond Stokes]

Service department can figure out. Thanks

I had the same issue. I removed the Isimple Gateway module and the noise went away.

 

[Radz156]

I had the same issue. I removed the Isimple Gateway module and the noise went away.

What’s that? Is it easy to remove? Thanks