AriesGMC_Indigo

If anyone finds this in the future, the fix was just replacing the speaker itself. I just replaced both front tweeters with GM GENUINE 22933869. Since replacing one meant removing the same things for the other anyway.

2018 GMC Sierra 1500, SLT, 2WD, 5.3L V8, Bose 6 speaker system with subwoofer NKC Is this a speaker issue or amp? Does the blinker sound come from this speaker? Conditions: Parked for 10mins from being driven for about 15mins in about 80 degree F weather, I hear a high-pitched noise immediately after turning on the truck from this upper speaker on driver side. I could hear the door chime still going off in a weird off-tune noise and then nothing. No radio, no blinker sounds, nothing from that speaker now. This was less than a week from this post. The door speaker works just fine. Some things I feel are notable: 1. Replaced door speaker less than a year ago. 2. Reset all settings over a week ago, before this issue. 3. I always had an intermittent issue with sound where I would need to turn the volume up about halfway to get the right side passenger speakers to "turn on" or activate and things would be great. Work to diagnose: 1. Checked for blown fuses in left panel on driver side. 2. Checked for blown fuses in the box under the hood. 3. I did not check for blown fuses in the passenger side. Nothing else is wrong with the truck mechanically.