Jump to content

2020 2500HD

Mike Fetherling
 Share

Recommended Posts

Mike Fetherling New Member

Mike Fetherling

Posted
Posted

I have about 9,500 miles on this new truck and I can not believe how noisy the brakes are! A little noise is fine, but I have never had a truck (or any other vehicle) this bad. It sounds like it's coming from the rear passenger side and intermittent - it doesn't do it all the time. It's worst during lighter braking - getting on them harder quietens them up. Then - it won't make any noise for a while - just to start up again. I've taken it to the dealer and of course, they found nothing wrong. I pull up in front of customers homes and if they are outside, they are like..."dude fix your brakes". Sucks to have invested in a new truck that sounds like a beater.

Anyone else have this issue???

ROOK Lucky 13 Enthusiast

ROOK Lucky 13

Posted
Posted

That sucks man. Sucks the dealership won’t make it right - squeaky brakes are usually a pretty easy fix, unless there really is something wrong with the caliper/rotor, in which case you should have warranty coverage. A new set of pads on that side shouldn’t be too much for a dealership to make this right on a new truck sale. Take it back, hopefully they can reproduce your problem and go further than your first run at them.


Sent from my iPhone using Tapatalk

Thankful Enthusiast

Thankful

Posted
Posted

My 2018 had squeaky brakes, and after the third visit and complaint the dealer replaced the front pads.  It fixed it for a while and then started up again but not as bad.  I traded it for a 2019.

kylant Enthusiast

kylant

Posted
Posted

There is a bulletin for this. The fix is to replace the pads, different material.

There have been some reports that new pads didn't fix the problem

Dunn Senior Enthusiast

Dunn

Posted
Posted

mine squeek in morning for first few stops then goes away......

Mike Fetherling New Member

Mike Fetherling

Posted
  • Author
Posted
On 8/11/2020 at 10:14 AM, kylant said:

There is a bulletin for this. The fix is to replace the pads, different material.

There have been some reports that new pads didn't fix the problem

Thank you for this! I found it: Bulletin No.: 20-NA-020

RossEGCA Enthusiast

RossEGCA

Posted
Posted

I have a 2020 Sierra AT4 HD.  Brakes started to squeal at about 2500 miles.  All 4 wheels did it at different times and sometimes all at the same time.  Dealership said its normal brake noise.  I laughed....it sounds like a garbage truck on Sunday morning.  Really loud and embarrassing after spending $80K on the truck.  They refused to do anything about it.  I've always done my own brakes so I just took them off, cleaned them and put anti-squeal compound on the back.  Still squealed.  Tried again with a different compound....still squealed.  Finally I took them off and since they are squared off at each end unlike most pads I've seen which have a 45 degree chamfer on them I took an angle grinder on the ends of each pad and created that 45 degree chamfer and problem solved.  I also used an anti-squeal on the back of the pad for extra dampening.  I think the squared off pad edges just vibrate at low speeds.  Don't expect your dealership to do anything.  Hope this helps.

Mike Fetherling New Member

Mike Fetherling

Posted
  • Author
Posted (edited)
4 minutes ago, RossEGCA said:

I have a 2020 Sierra AT4 HD.  Brakes started to squeal at about 2500 miles.  All 4 wheels did it at different times and sometimes all at the same time.  Dealership said its normal brake noise.  I laughed....it sounds like a garbage truck on Sunday morning.  Really loud and embarrassing after spending $80K on the truck.  They refused to do anything about it.  I've always done my own brakes so I just took them off, cleaned them and put anti-squeal compound on the back.  Still squealed.  Tried again with a different compound....still squealed.  Finally I took them off and since they are squared off at each end unlike most pads I've seen which have a 45 degree chamfer on them I took an angle grinder on the ends of each pad and created that 45 degree chamfer and problem solved.  I also used an anti-squeal on the back of the pad for extra dampening.  I think the squared off pad edges just vibrate at low speeds.  Don't expect your dealership to do anything.  Hope this helps.

Hey man - I printed off the bulletin mentioned in this post and took it to the dealership - they changed out all 8 pads with an updated material as a warranty repair (probably softer material). The breaks are perfectly quite now!

Edited by Mike Fetherling
RossEGCA Enthusiast

RossEGCA

Posted
Posted (edited)

 

 

Glad to hear it.  Hopefully they don't start up again down the road.  If mine start squealing again I'll have to replace them.  I looked for aftermarket pads, but they don't make any yet that I could find. 

 

UPDATE:  My brakes started to squeal again so I took it back to the dealer with the service bulletin and they replaced the pads.  It was quiet for 4 weeks and started to squeal again.  I took it back yesterday (dead battery again too) and they said they could not reproduce the squeal.  (it literally does it every time I drive it.)  I showed the service guy a video I took the day before and he said even if they did hear it they couldn't do anything about it because they already replaced the pads.  I asked about replacing the rotors and he said GM would not pay them to do that so they won't do it.  Seems like they aren't allowed to think outside the box to fix the problem.  I'd be happy if they just turned the rotors to see if that works.  I guess I have to pay for it myself.  

 

UPDATE:  I contacted GM Corporate at 800-462-8782 and told them about the brake squealing issue.  The assigned my case to Courtney who never called me even after I left her two messages.  Due to lack of communication GM escalated my "ticket" to a different office and they have now assigned a "TAC team" to work with the local GMC dealer to fix the brakes and a dead battery problem.  They're giving me a loaner car which makes me think they are going to have it for a while.  Hopefully this fixes it.  They are now squealing not only at low speeds, but when I apply them at 20-30 mph.  So frustrating!

Edited by RossEGCA
  • 1 month later...
Alan Juden Enthusiast

Alan Juden

Posted
Posted

Thanks for this article guys, I have been having the issue and the dealership forgot to check the brakes when I went in for an oil change a couple months ago. Drives me crazy to hear the brakes so squeaky. I have 20k miles on mine and it's been doing it intermittently for the past few months. Always happens at low speeds with light braking, like in traffic or pulling slowly into my garage. At first I thought it was because I live off of gravel but my 2012 Silverado 1500 never squeaked like this. I have printed out the bulletin as well and intend to bring it in with me on the next oil change so that hopefully they'll take care of it for me.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Common Sense Assembly   Your driveline is forgiving of the occasional mistake. It will even often forgive the random serious blunder. But it will not forgive a continuous bad habit.      What? Not everything needs to be a five thousand word essay.       
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      We drove about 15 minute east today to visit a friend and saw a steep increase in price in the same county. About 50 cents a gallon steepper. 
    • Grumpy Bear
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Grumpy Bear · Posted

      Sure about that? A degree wheel and a dial indicator would lower your degree of assurance in that statement. 😉    It why we have offset keys and dialable timing sprockets. Just say'n.... I've built a few and have never seen one "On the money". 
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I will admit I haven't experimented much with pressure drops beyond the numbers I put in and part of that is that the numbers I used are fairly low and then found out it would trigger regardless at that 35 psi. Having said that I had tried before had changed the placard pressures and being that I have a 1 ton set to 80 on the placard for the rear I believe it triggered close to 60, the front I don't recall now for sure but thought maybe it could get close to 45 from that factory 60 placard pressure. So I never did figure out if it was a number of psi from placard pressure to the alarm or a percentage of the total placard number as some figured it was like a 25% drop from placard pressure would trigger it. So as to try and answer your question, I believe I set the placard pressure on the front to 47 or so and while I run the front tires at 40, they have dipped below that some if its colder and I haven't put "winter air" in yet and never once have had the front alarm go off. I would say that the answer your looking for is no, that if you set your placard pressure to 45, you have a certain amount of room to drop below that pressure before the alarm will go off.    The pressures you decide to run in your truck, that ends up being what makes sense to you based on what your carrying in your truck or if towing, then have to bump them back up to something that will carry the load in the rear and the fronts typically left at the same pressure. It all comes down to that chart I put the link to and using an accurate roadside scale to be your guide, both unloaded and then loaded to know your minimum safe pressures.    I just wish GM would allow a person to change the readings for the tire pressures to the English system of pounds as I have to look at that goofy metric reading that will never ever jive in my head and will go over and change it just to figure out what they are if need be and then change it back. 
    • TrueBlue
      No Software Updates - Old Build

      By TrueBlue · Posted

      That part I understand, that the dealer can do it. But I'm not understanding why updates that were available to the truck since it left the factory, or the dealership originally, would not still be available to it without dealer intervention.   I'm thinking along the lines of recalls. They stay available until they are completed, regardless of whether they are in warranty or not, or in the hands of the original owner or not. Why not updates as well, especially since some of those can be safety related also?

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...