Joined
·
5,301 Posts
The first 2 times it happened was actually before I swapped the radio to MyLink. That was one of the main reasons I decided to finally get the swap done. I thought it might have something to do with the radio. It has happened once afterwards. MyLink is working great BTW.If one of the radios the eeprom was read on I'd suspect some kind of data corruption causing it, the output to that channel is programmable in the amp IC and it's possible the routine is looping for some reason, most of the code to run the radio resides in the flash eeprom but basic setup data is also stored in the eeprom everybody has been messing with, if you have a backup copy of the original eeprom burn it back and see what you have
The noise started when the stock green screen radio was still in the car, and continued after the upgrade. I do have two more radios I can try though.Another radio to try ? there have been radio issues reported with the ground problem but never one report of a noise like that, at this point process of elimination since no codes are set, the Service Stabilitrac Warning is a clue of some buss trouble---hmmmm remember reading about the differences in the comm speed and bit size as GM changed the architecture spec, white automotive is the expert and he re-writes the code to accommodate these changes when upgrading to a newer radio, so if its a newer radio this can be the cause of erratic behavior on the buss, something is initiating the sound which is developed in the radio for sure
Not likely in radio thenThe noise started when the stock green screen radio was still in the car, and continued after the upgrade. I do have two more radios I can try though.
Agreed.Not likely in radio then
Good point. Maybe I can find someone with a Tech 2 that would be willing to scan the codes for cheap.Agreed.
Note that many code readers are limited and may not read all the codes in the car. You might try a different one, or see if there's a way to get expanded capability.
I never renewed it after the initial trial period. I think there is still a number, but I don't think it works unless you pay for minutes. I will try calling it to see what happens.Do you have OnStar service? I'm not sure how that works, but doesn't it have a phone number attached? I wonder what happens if someone calls your number?
Good idea.Something else you can try is call GM's Infotainment group. Maybe they can identify the sound.
Yes, everything in the car works perfectly. No warning lights or notifications.Door chime sound works OK?
A good digital meter will quickly determine the condition of your battery, cables and groundsYes, everything in the car works perfectly. No warning lights or notifications.
I noticed that my battery terminals are highly oxidized. I am going to clean them and all of the ground connections today. I also noticed that my headlights are starting to dim when I press the brake pedal. Maybe my battery is not very strong anymore, and the terminals are not getting a very good connection causing the BCM to do strange things.