No audio while engine is running

[Nor cal chevy]

Audio will work in any position of the ignition switch. Once truck is started audio turns to intermittent staticky scramble but if I hit the lock unlock button or switch to reverse audio comes on for a second . After a 30 min drive audio started working like normal but as soon as truck was turned off and then turned back on  the problem started again 

[JimCost2014]

27 minutes ago, Nor cal chevy said:

Audio will work in any position of the ignition switch. Once truck is started audio turns to intermittent staticky scramble but if I hit the lock unlock button or switch to reverse audio comes on for a second . After a 30 min drive audio started working like normal but as soon as truck was turned off and then turned back on  the problem started again 

Welcome to the site.

 

Information about the truck, year, model, what audio system you have (4" or 8" screen) and what does the actual MyLink screen look like while this happening would help.

[Nor cal chevy]

It’s a 2014 Silverado 1500 LT Z71 . The standard audio with 8 inch screen . The screen functions normally. On my daily drive I pass by a spot that always turns the audio to a brief white noise. Two days ago while passing by same spot the noise sound like a old dial up modem and after that it hasn’t worked right 

[JimCost2014]

14 hours ago, Nor cal chevy said:

It’s a 2014 Silverado 1500 LT Z71 . The standard audio with 8 inch screen . The screen functions normally. On my daily drive I pass by a spot that always turns the audio to a brief white noise. Two days ago while passing by same spot the noise sound like a old dial up modem and after that it hasn’t worked right 

My guess would be the your HMI module is going out, seems to be a common problem with the 14 and 15's.

 

Wonder if you are picking up some "weird military" frequencies from the local Air Force base?

[GTPprix]

Which radio source are you on XM or Terrestrial? 

[Nor cal chevy]

3 hours ago, GTPprix said:

Which radio source are you on XM or Terrestrial? 

Using XM 

 

3 hours ago, JimCost2014 said:

My guess would be the your HMI module is going out, seems to be a common problem with the 14 and 15's.

 

Wonder if you are picking up some "weird military" frequencies from the local Air Force base?

The spot i get the noise is nowhere near the base . I've seen a couple posts about people getting a new/used HMI module on ebay that has  some software upgrades too. What are your thoughts on that 

[JimCost2014]

55 minutes ago, Nor cal chevy said:

Using XM 

 

The spot i get the noise is nowhere near the base . I've seen a couple posts about people getting a new/used HMI module on ebay that has  some software upgrades too. What are your thoughts on that 

If that is the problem and needs to be replaced, I would definitely see if you could upgrade from the 2.0 to the 2.5 version. Gives you CarPlay and a quite a few other apps.

 

You might also check with your dealer, just to see if there are any updates that need to be done to your existing unit.

[GrumpyAeroGuy]

My guess would be the your HMI module is going out, seems to be a common problem with the 14 and 15's.
 
Wonder if you are picking up some "weird military" frequencies from the local Air Force base?

Not only the 14s and 15s.

My 2016 hmi module bought the farm as well, recently.

This issue seems a bit more prevalent than we think.

Sent from my LM-G710 using Tapatalk

[Nor cal chevy]

A couple days ago I decided to take out the led side marker and tail lights. I put back the standard bulbs and I still had the same issue . The next morning stated truck and the radio turned on and was back to normal . It’s been working good for two days now . I don’t know why installing led bulbs would cause such a issue.