There is a switch associated with the brakes that makes a "click" noise when depressing the brake pedal. Is that perhaps what you're hearing? Or is it definitely coming through the stereo?

 

Wife says it is coming through radio system and is loud. I have not driven it to see if I hear it. She says it is like a POP noise.

 

Our brakes are electric "brake by wire" with a vacuum pump for assist instead of engine vacuum so it sounds like the radio is picking up interference from the brake system. I'm curious is if happens on AM, FM and what frequency?

Steve

 

Wife says she is listening to FM radio. Seems only to do it when putting car into gear or park when you hit the brakes and move shifter lever at the same time. She says it has not done it in just stop and go driving.

 

Had this happen this morning. I had to hit my brakes , not too hard as my crash assist thing went off, red lights flashing etc. then I drove a little bit after , came to a stop and my car shut off with the auto shut off. When I resumed to drive a very loud popping noise sounded and seemed like it was over the radio. Did not appreciate the scare. I had it on satellite radio.

 

Well we have had ours do it several times now so I CR on here to see if anyone has complained or found a fix. Apparently it scared the poop out of the wife yesterday.

shawn

 

We have not heard it in awhile now but sure sound like you have the same issue. Common thing is hitting the brakes that causes it.

 

What mode was she in? am/fm radio, sat radio, wireless connection to music on a cell? Did it happen when she hit the brakes? Driving along. We need to try to get a sense of when it happens.

 

When brakes applied and I always run satellite radio

 

The best thing anyone can do who is having this problem or any other problem is report it to NHTSA which is where most recalls and TSB's (technical service bulletins) originate. CR also helps, but most manufacturers follow NHTSA very closely for new problems.

Steve

 

CR?

 

Consumer reports.

Steve

 

Well then there are a few of us already that could report this. Again I think we need to document the best details to when and what you are doing when it happens.

 

I reported this to the NHTSA .

 

I was at a roundabout waiting for oncoming traffic. I heard a pop that sounded like it came through the radio or my speakers. Not sure what it was. I was listening to FM radio station.

 

Had you hit the brakes when it did it?

 

I actually had my foot on the brakes to check for oncoming traffic when I heard the popping sound

 

I had the popping noise happen today while test driving one. Definitely coming through the audio system. Immediately thought of this thread when I heard it. Was torn between the Trailblazer and GMC Terrain. Drove an hour and a half to test drive and possibly purchase the Trailblazer. Got to the dealership and oops! We sold it last night. Gee thanks for giving me a heads-up. Wasted half my day. 😄

 

Everyone has a Terrain. Find a TB.

 

To be honest, it became a timing and value proposition for me. I really like both vehicles. I need an AWD daily driver that I can fit 2 car seats in the back seat while I'm driving. The space in the Trailblazer surprised me and its a fun vehicle. That being said, ride quality and cabin noise is definitely better in the Terrain. Price also started playing a part because what started out as a fairly large price difference (40k for Terrain and 33k for Trailblazer MSRP), rebates and the GMC dealer offering way more for my trade-in than the Chevy dealer ended up making the price difference 3k. Still, I haven't taken delivery yet. Waiting on vehicle to come in from a sister dealership. Maybe that'll get screwed up and I'll be scrambling to find something before month's end. If that ends up being the case, I'd still consider the Trailblazer.

 

People need to report this popping stuff to the NTSB (I did) so the issue gets some traction somewhere.

 

We have not had the popping issue in some time after happening 4 or so times. I turn off auto start when I drive it, Wife leaves it on, she is the only one that has heard the popping.

 

I've reported it but they want to replicate it each time I bring it to the dealership and its even in the shop today and I mentioned it. I swear Murphy's law is real. This is the third time I've brought it in. Even though it's only for the Jack Recall, I told them to look at it.. again. I'll see what happens this time.

 

I have had the same problem. I took it in and of course like mentioned above it didn't happen when they had it ... but it happened when I turned the corner to drop it off. How frustrating. I didn't know you could report it to the mentioned above, I will do that now. Thanks, I am glad it's not just me.

 

Might sound crazy, but check your grounds. Might be an electrical noise due to improper grounding. When noises come through your radio, it's usually caused by electrical interference.

 

How is that done ?

 

I have a 2021 Trailblazer and have this happen to me maybe once or twice a month. Maybe more often since I live in an urban area and stop/go a bunch. You're not alone! It's loud enough in mine I've considered trading it in for something else. Mine has mostly been through AM/FM radio or if I'm using Bluetooth.

 

I am curious.. what models of TB and do you have the bose system? I have a 21 RS with the bose system and have not had this issue. Just curious if its an issue with the non bose models.