BRAKES WENT BAD @ 9800 MILES AND ARE GOING BAD , again @20k miles

RGA · August 15

new to the forum and already I'm asking for input .

let me start by saying I lov my GMC 2500 HD this is my fifth one since 2002, I

always buy the 2500 HD SLT 4x4 4 door, all gas except my 06 was a duramax,

as for the brakes my experience has been I get 80 to 90 and 100k on the duramax before ever needing brakes I retired last year and bought my last truck I hope ..

The brakes on MY 2023 2500 HD SLT Sierra At4 went completely south at 9800 miles all highway between northern California and Washington state. AND I MEAN THEY DIDNT JUST START PULSATING IT went from fine to the worst warped rotors pulsating bad .the dealer took care of all of it with front and rear new rotors new pads said GM knew about the issue they had mentioned dust getting behind them I called BS on that , I've done to many brake job to know that they're always full of dust unless dirt was getting in and around the caliper piston causing them to stick they never elaborated on the reasons ,,anyway whatever the reason GM replaced all the parts with supposedly upgraded rotor material and better pads ,,,,, I just turned 20,000 miles and the brakes are starting to do exactly the same thing not as bad but I can tell the rotors are starting to get warped I have an appointment at the dealer tomorrow , my question for all of you have any of you had the same problem, I have searched the Internet cannot find anything about GM replacing rotors and pads due to bad material I see stuff about brake boosters pressure switches ABS systems on the up until 2018 I see nothing about 2023 with bad rotors because it 20,000 I'm sure there's gonna be pushback from GM brakes aren't warranty to begin with but they had a known problem they fixed it once and I will never let them off the hook looking for fuel my argument .

diyer2 · August 15

Same parts, same results.

Kjduvall · August 16

seen a bad crimp on the soft lines going to caliper act as a one way valve and make that happen ( usually newer jeeps) wonder if thats whats going on here. really sounds like what you have holding pressure on the caliper and not fully releasing causing them to wear fast. just a thought for you.

64BAwagon · August 16

It sure sounds like something isnt releasing pressure. If you have one of those infrared thermometers you could check the calipers for heat and see if one or more are hung up. Lots of things it could be.

RGA · August 16

2 hours ago, 64BAwagon said:

It sure sounds like something isnt releasing pressure. If you have one of those infrared thermometers you could check the calipers for heat and see if one or more are hung up. Lots of things it could be.

Good ideas will check before it goes in on Monday

64BAwagon · August 16

Pull the ABS fuse and stomp on the brakes a few times just for grins to see if it jars something loose.

RGA · August 20

Well after starting the claim with GM and dropping the truck at the dealers today they tell me there is no sign of defective parts that they can then show GM and nothing wrong with the entire braking system so and this is a quote it's my poor diving and heavy braking habits ,,,, you have to remember all four rotors warped at 10 k and the same dealer found a bulliten that he was ble to get them replaced due to defective parts and now I just turned 20K AND THE rotors are starting to warp again but this time it's not bad material it's my bad braking habits un Fricking believable .like I said this is my fifth GM 2500 HD IN 24 years the first 3 were work trucks and the 4th was one I bought new for my daughter all of those brakes lasted 90 - 100k, when I go to GM parts direct I can't even find new rotors for the 2023 says decontinued ,so I looked up the 2024 same thing discontinued part numbers , so what did the dealer use supposable to replace the first ones ,,screw GM I'm just going to go after market rotors any suggestions

64BAwagon · August 20

Their response is not surprising although if they were serious they could have pulled the data from the truck that would have shown how you drive it. It was kinda the low hanging fruit of excuses for them to avoid the time and expense of actually diagnosing the truck. Ask for GM's technical service to get involved and actually lead you dealer scrubs by the nose and see if they come up with something. Clearly theres something wrong.

Their excuse is unfortunately plausible in some cases though (I dont think yours is one of them) We had a guy at work that was assigned a Yukon. For grins they would get a monthly fuel usage report that showed miles vs gallons for each vehicle in the fleet. His was consistently lower than the other similar vehicles. He kept insisting something was wrong with it. No codes, no other issues, all maintenance up to date and brakes all looked good. After spending considerable time to appease him (he was one of the litany of bosses) I suggested to him that perhaps it was his left foot braking that caused the poor mileage. After leaving in a huff we watched him pull away with brake lights ablaze. You never saw this vehicle on the road without the brake lights on due to him resting his left foot on the pedal.

johnnyquick · August 20

6 hours ago, RGA said:

Well after starting the claim with GM and dropping the truck at the dealers today they tell me there is no sign of defective parts that they can then show GM and nothing wrong with the entire braking system so and this is a quote it's my poor diving and heavy braking habits ,,,, you have to remember all four rotors warped at 10 k and the same dealer found a bulliten that he was ble to get them replaced due to defective parts and now I just turned 20K AND THE rotors are starting to warp again but this time it's not bad material it's my bad braking habits un Fricking believable .like I said this is my fifth GM 2500 HD IN 24 years the first 3 were work trucks and the 4th was one I bought new for my daughter all of those brakes lasted 90 - 100k, when I go to GM parts direct I can't even find new rotors for the 2023 says decontinued ,so I looked up the 2024 same thing discontinued part numbers , so what did the dealer use supposable to replace the first ones ,,screw GM I'm just going to go after market rotors any suggestions

Duralast are good, raybestos is very good but definately crawl around and look for yourself, the dealers are incompetent in my experience and hire any long haired, tattoed ear pierced guy that wanders in off the street..lol

Yes I am generalizing and opinionated but I am allowed to have an opinion.

Pryme · August 20

One thing I was told long ago by a mechanic friend of the family and I don’t know if this still holds true but it stuck with me and I do it literally every time I stop is after I come to a complete stop I ease up on the brake and re apply. The thinking is that as you stop especially if you’re a hard braker and I see ppl on the road all the time who are, you heat the rotors way up and by keeping the brakes applied, you create a really hot spot that can warp the rotors. But if you ease up a little after you come to a stop, the pads are clamped on a cooler section of the rotor.
like I said I’ve always done this it’s second nature. Never had a warped rotor issue on any vehicle. But I also coast down to stops if at all possible before needing to apply brakes. I see ppl all the time fly past me coming to a stoplight only to have to jam on their brakes and I’m next to them in 1.8 more seconds without barely using my brakes. Good stuff.

RGA · August 21

Never thought of it that way but I To stop soft and always release the brakes and let r creep a bit before stoping wife hates it ,,

10 hours ago, Pryme said:

One thing I was told long ago by a mechanic friend of the family and I don’t know if this still holds true but it stuck with me and I do it literally every time I stop is after I come to a complete stop I ease up on the brake and re apply. The thinking is that as you stop especially if you’re a hard braker and I see ppl on the road all the time who are, you heat the rotors way up and by keeping the brakes applied, you create a really hot spot that can warp the rotors. But if you ease up a little after you come to a stop, the pads are clamped on a cooler section of the rotor.
like I said I’ve always done this it’s second nature. Never had a warped rotor issue on any vehicle. But I also coast down to stops if at all possible before needing to apply brakes. I see ppl all the time fly past me coming to a stoplight only to have to jam on their brakes and I’m next to them in 1.8 more seconds without barely using my brakes. Good stuff.

bruceb58 · August 21

I stop this way always especially since most of the time I am towing a trailer.

RGA · September 9

Well it took three weeks and GMC denied any warranty claim for the warped rotor at 9800 miles Question about warranty on the rest of my brake system if I use powerstop z36 brake kits with drilled and slotted rotors ,what effect will that have on the rest of the brake system , ABS or the ESC ,

RGA · September 15

I spoke to soon a few days after they denied the brake warranty , they offered to buy or repurchase my truck , at full price + tax and license what the hell is it a trick to get me to spend another ten k on a 24/25 truck what do you think

Chadw90 · October 16

Mine were warped just as you described. Started to notice it at 20,000kms. I had trailer brake issues and after in/out of the dealer over the course of a couple months, they replaced some modules and machined my rotors at 26,000kms, we figured this was due to the truck having to do all the braking. But im starting to notice the pulsating again at 35,000kms. My fuel mileage is too good to have brakes dragging. Im convinced that it is just poor quality rotors.
this is my 26th vehicle, first with warped rotors.