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The Definitive solution to the Pedestrian warning alert sound (Angels singing?)

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#1 ·
Guys,

Just purchased a new Blazer EV RWD model in red tint coat (gorgeous color....looks even better in person than in photos).

Absolutely love the vehicle....this thing smokes just about any other similar priced EV on the road in terms of style, comfort and overall design.

Sexy shape on the outside and the interior is excellent....stylish....feels modern but an elegant mix of new school and old school.

Im NOT a fan of the spartan interiors you see in most EV's with the tablet glued to the center dash.

The Blazer's layout is driver focused and it just feels like your sitting in a really nice "normal" car (that just happens to be powered by electricity)....doesnt have that typical EV feel which Im not a fan of.

Anyway....my only gripe with the car was the pedestrian warning sounds it made under 25 MPH. I didnt hate them....that's too aggressive a word....but if just kind of annoyed me and I have been in plenty of electric vehicles that didnt have that or anything similar.

I read about the pull the fuse method and that's what made me realize I really preferred the silence but of course it throws a code on the screen you have to clear every time you drive and it effects the headlamp leveling as well which is on that same circuit. I was in search of a more elegant solution and my thoughts were I locate the speaker and replace it with a large resistor that matched the impedance of the speaker. This way no codes and blissful silence pulling up to drive thru windows etc.

Turns out it was even easier than I expected.....you do have to pull the plastic under belly in the front of the car (actually just mostly unscrew the passenger side right front if you have small hands) and then unplug the connector that goes to the speaker. I thought for sure a code was going to pop up in the dash with it disconnected but it did not and after my quick (silent) test drive I figured out why. When I pulled back in front of my shop I put it in reverse to straighten out the car and the "angels" started singing again....LOL (But alot less noticeable). Turns out the car has two speakers....one that goes on in the front when you have the trans in drive and the other in the rear when you have the trans in reverse.

Which honestly if I was thinking in advance about the ultimate outcome of this project and there was an easy option to leave it on in reverse only (where I feel its more warranted with limited reverse vision), I would have opted for that. Most of the annoyance for me was all in my forward motion or coming up to a drive thru window etc. I think due to the fact the rear speaker is still connected the ECM still sees a load on that line and its not throwing a code due to just having the front disconnected. To be honest Im not sure and I couldn't care less why....what Im left with is the perfect outcome. No alert noise in forward motion and a usable alert noise in reverse where you do have limited vision and it makes alot more sense to have something like that to help alert people behind you that your backing up.

I searched high and low for a solution on this forum and anything else that Google brought me to.....besides the pull the fuse deal nothing else seemed to come up.

Hope ALOT of you find this information useful (Your welcome!).

To be honest, I make my living building high performance parts for gas powered engines but I love my EV for alot of the typical running around town getting parts for my business and just all my day to day stuff. With the solar panels on my roof it just started making alot of sense for me. Now my gasoline bills will only be for driving my hot rods and the money I save with the EV can help cover all the fuel.

Its an excellent vehicle IMO....if your reading this and haven't bought one yet don't drive one unless your ready to spend the money (cause your going to like it alot!)
Hopefully most of the problems GM had with the rollout of the product is mostly sorted but Im prepared to take it to the dealer if needed.....I think GM hit a homerun with this vehicle and my sense is you will see alot of them on the road in one to two years.

I will try and update this thread with some photo's to make things even easier for you guys when I get a chance

😎👍
 
#2 ·
As I suggested in a similar previous thread on this topic: You run the risk of liability if you have a incident and it is determined that you have modified this system and its reduced effectiveness is determined to have contributed to the outcome. Just food for thought!
 
#37 ·
I have a new Chevy Blazer EV and this sound is very annoying especially when I pull into my garage and it is still in drive.
This is a federal regulation It's the law: Electric cars must make noise after September 2019 .
Liability is the thing on my mind if I tinker with the fuses and disable it. I will be very worried if I hit someone in the neighborhood, especially a kid, and the blame goes on tinkering with the car to disable it. Society must be able to adapt to a new technology without these federal regulations. I bought it because it is supposed to be quit.
 
#3 ·
Mamo,
I couldn't agree more with your sentiments about the Blazer EV RWD. I flew to Texas from California to buy my Riptide Blue on Black RS RWD. I had no interest in the AWD with smaller battery, slower charge capability, and less horsepower. Of course, living in San Diego negates the need for AWD. This vehicle is, so far, amazing. It's definitely an around-town, daily driver vehicle for me. I also have solar and enjoy the free driving. My 6-speed ZL1 gives me all the pleasure one could want in an ICE vehicle. Since my first three days with my Blazer EV was used for driving 1400 miles home, I can say first hand, that driving Electric Vehicles on a road-trip like this, is pure lunacy. If I was driving this same drive in a gas powered vehicle, it would have only been two days. Also, I had no prior experience in charging and paid 64 center per kWh for 1400 miles. Way more expensive than gas! Especially with gas prices outside of California.

When I test drove Blazers originally before the stop-sale, I could swear the "Angels" were much louder than I'm experiencing on my RWD that was produced in 2/24 and has the software update, or even was built with the current software version. I knew about disconnecting the connectors under the bumper and had planned on doing so. However, now, with what seems to be a lower volume of "Angels", I'm good with it. I absolutely love my Blazer EV!
 
#8 ·
Mamo,
I couldn't agree more with your sentiments about the Blazer EV RWD. I flew to Texas from California to buy my Riptide Blue on Black RS RWD. I had no interest in the AWD with smaller battery, slower charge capability, and less horsepower. Of course, living in San Diego negates the need for AWD. This vehicle is, so far, amazing. It's definitely an around-town, daily driver vehicle for me. I also have solar and enjoy the free driving. My 6-speed ZL1 gives me all the pleasure one could want in an ICE vehicle. Since my first three days with my Blazer EV was used for driving 1400 miles home, I can say first hand, that driving Electric Vehicles on a road-trip like this, is pure lunacy. If I was driving this same drive in a gas powered vehicle, it would have only been two days. Also, I had no prior experience in charging and paid 64 center per kWh for 1400 miles. Way more expensive than gas! Especially with gas prices outside of California.

When I test drove Blazers originally before the stop-sale, I could swear the "Angels" were much louder than I'm experiencing on my RWD that was produced in 2/24 and has the software update, or even was built with the current software version. I knew about disconnecting the connectors under the bumper and had planned on doing so. However, now, with what seems to be a lower volume of "Angels", I'm good with it. I absolutely love my Blazer EV!
Yes....I felt the same about the AWD vs RWD situation and had to search and travel quite a distance to pick one up as well (not nearly as bad as your ride though!.....only 300 miles!). Seems they make 15 AWD versions to every RWD car and I also live in CA so don't really have much need for the benefits of AWD. And the whole "EV's are cheaper to run than gas cars" is really BS as you and I found out quickly. Unless your paying more reasonable rates for electricity (or have solar to help out), the cost benefits of the EV has really dwindled....certainly in Commiefornia. And that's only going to get worse moving forward unless things change drastically in the cost of electricity which lets face it is highly unlikely. Also you mentioned the volume of the "Angels".....Im pretty sure they did change that situation (a volume reduction) based on all the reading I did in an effort to find a solution.

Drove it today.....clocked 78 miles with only 21% loss in battery life.....and a good part of that was traveling 70 - 75 MPH or so (and some slower driving in traffic.....it wasn't all highway). That's pretty good.....at that pace I would get over 360 miles if I ran it from 100% to zero (not that I would but the range GM quotes is conservative if anything. I do know that higher speeds on a straight freeway run wont be nearly as good but for a vehicle that has a pretty big frontal area, if you keep it a reasonable speeds the range is surprisingly good (obviously the larger battery in the RWD helps but it costs more to fully charge of course also.....efficiency levels of both AWD and RWD are probably similar).

😎
 
#5 ·
Looks like you and I came up with the same solution....although I do not have a Blazer EV....YET. I did just return a Blazer EV loaner that I had for a few days and yes that noise is very loud and annoying. It does play after 30KPH but it is very muted but still somewhat noticeable. Yesterday I also noticed the sound coming from the back while reversing. Sneaky buggers. However it will be useful as a "reverse beeper" sort of system.

Looking forward to your pics on this.
 
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#6 ·
Thanks for the discovery. That saves me a lot of Google search time. Yes, that sound is absolutely nuts. It could come in handy when you are near pedestrains, but 99% of the time it is crazy and annoying. I Like your description of career and hot rods, likewise my other car is a C8 Corvette. Just bought the RS today. Really impressed with everything.
 
#7 · (Edited)
Yes! That works. Thanks again for sharing the solution.
Time to remove most of the bolts in the lower splash cover; 4 minutes.
Time to locate the speaker and connector; 1 minute
Time to unhook the connector; 15 minutes and a lot of cuss words !@#$%^

The pleasure of driving without circus music: Priceless

Wiring connectors are always a pain and every one is different.
I took a picture. The orange tab pulls out first, it is tough. I pushed with a screwdriver and it popped all the way out. THEN you can press on the white tab that is touching the orange in this picture.
Just squeeze the white tab, you can pull the connector off without damaging it like I did.
Tape it up so it will not fill with water, put a cable tie on secured it to the wiring harness so it will not rattle.
Image
 
#9 ·
Oregon,

Glad my thread helped you out.....and YES....that connector is a PITA to remove. I had removed the whole belly pan (which in hindsight is unnecessary) and was standing under it on my four post lift so I had an easier time accessing it and it was still a bitch to get off.

Anyway.....a couple of pics for you guys. The first is a more zoomed out location of the speaker and slightly troublesome connector.....LOL

Basically once the pink lock is slid forward you have to squeeze that connecter a good bit (at the white part that now has a gap in front of it with the pink part pulled forward) and at the same time pull to remove). If you really get frustrated just cut the wires....it won't act any different than leaving the plug disconnected but I would recommend you wrestle with the plug and keep the OEM connector in place.

If you haven't seen under your vehicle its pretty cool with the absolutely flat battery taking up most of the real estate. Seems to me GM made that battery completely serviceable and easily removable in the event it goes bad or just times out over many years. Have no clue what a replacement would cost but you don't have to dismantle the entire vehicle to replace it and that's certainly bonus!

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#10 ·
Very Cool. I am thinking the best solution would be to put a switch inside the car, run wires to the speaker. Then you could leave it off until you get to a parking lot with people on foot, and turn it on for that. It could be valuable, but to have it on all of the time is just nuts.

I can't believe that GM thought this was a good idea. I don't think it is a fed law because my friend just bought a 2024 Tesla and it makes no sound.
 
#11 ·
Keeping it on in reverse is a no brainer.....your limited with visibility in reverse. Going forward....if I feel people aren't aware Im close by a quick horn beep will work just fine

The switch is actually a decent idea but is it worth all the trouble?

And I agree completely on the Fed law deal (or lack there of). It was one thing I told my wife....I have customers pulling up to my shop with new electric vehicles and no noises emitting from the car....I just hear rocks crunching under the tires as they pull up.
 
#12 ·
The reverse chimes totally make sense, just like a backup alarm on a truck.

Worth the work for a switch, exactly what I am thinking. and where do you put the switch. I don't want to be drilling holes in my new car.
If you drive into a mall or parking lot, I guess you just need to crank up the tunes, or lower the window and yell LOOKOUT NO BRAKES. That solves it.
 
#13 ·
Here is a link to “the EV noise law” it is actually a rule from NHTSA. Federal Register :: Request Access

From what I see all manufacturers of EVs must have noise under 18.2 mph. The rule effective date maybe was in 2020. My Blazer EV for sure starts the sound when my speed goes below 25. I agree the Blazer noise seems too loud.

My sons Tesla does make a noise.

One of the notes in the ”rule”:
Another 117 comments called for a consistent, recognizable sound or sounds in vehicles so blind persons can detect that a vehicle is nearby. Of these, 109 called for a single, uniform sound.
 
#16 ·
I'll reiterate what someone else said and note that this sound is a safety warning. If it were disabled and you're involved in a pedestrian accident, I'd be concerned about liability for disabling a safety warning on a car.
 
#19 ·
It’s been a couple months no issues. Don’t hear the sound inside the car much anymore. My guess it’s half the volume now. Standing outside the car you do hear the sounds. Good compromise imo.
 
#22 ·
I had to pull away some of the front and rear bumper cover to access the speakers. I found a cup that had the same diameter as the speaker grill. Used it to draw a circle on the sound deadening then with scissors cut it out. Used my hand and gloves to rub the sound material over the speaker. Used a heat gun to soften the material.
 

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#24 ·
I used 80 mil thick film. It is sticky on one side. You can use any sound deadening to cover the speaker. I ordered this film from Amazon. I painted the bottom black to hide it. You should be able to find black film on Amazon.

 
#27 ·
To be honest, that noise is way too loud when driving in town. I did call GM about that and they told me there's alot of complaint about it. Today they received a notice that they are actually working on finding à solution for it and that we all can expect something soon. Maybe a recall or an update to fix this issue.
 
#28 ·
This was the right way to fix it. Thank you for contacting GM for us. The pedestrian protection is important especially for blind walkers in the city and should be simple for GM to lower the volume to the legal requirement.

when I am in a drive thru it is simple to put the Blazer ev into park and back to drive so it did not bother me too much. Way easier than my 2019 Volt was.
 
#29 ·
The sound level is going to be a pretty low priority on GM's list if GM ever changes it at all. IMO cover it and you will love the car that much more. I never think about the sound level anymore but you do still hear it outside the car. Not disabled but adjusted.
 
#30 ·
Industry standardizing on a sound would be a good idea. Stop these crazy sounds and switch to recognized sound like an engine. Now what exhaust sound do you get? That will be a debated topic.

Cadillac Considers a Hypercar; People Prefer EVs with ICE Sounds - Autoline Daily 3829

 
#31 · (Edited)
@MYSS I used 3M08840 and cut it to fit the speaker.. Used 2 layers. Thank you for your informative post on how to accomplish this. Was very easy to do, only had to remove about 6-7 screws from right front underpan..Do not hear it in the car anymore, but outside it is audible.. :)
Did not do the rear.. Not sure if I going to or not.. Doesn't bother me mearly as much as the front one did..

Thank you!

Link to Napa for the sheet of insulation for anyone interested...

 
#34 ·
Thank you so much mamoMsports!! I have a equinox ev and it's identical as the blazer ev set up. Couldnt find any info on equinox. On the 2 bolt euvs I had u could just pull a fuse (there waz only the pfaf on 1 fuse). I really hate that noise and I honestly don't think it makes any difference, except sounding really weird and getting strange looks from people. At low speeds there is not much difference between newer ICE vehicles and evs
 
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