Back in December of 2019, we reported on a GM’s recall of roughly 500,000 vehicles in the U.S. over a faulty electronic brake control module (EBCM) software. The recall covered the 2019 Chevrolet Silverado 1500, 2019 GMC Sierra 1500, and 2019 Cadillac CT6, and went into effect January 27th. Now, however, according a recent report from Detroit Free Press, the fix may result in outright brake failure.
According to the report, GM has confirmed that between 1,600 and 1,700 units of the 2019 Chevrolet Silverado 1500 and 2019 GMC Sierra 1500 pickups, as well as possibly the Cadillac CT6 as well, have experienced brake failure following implementation of the original faulty brake control module fix associated with the recall. The report also indicates that around 160,000 GM customers part of original recall could also see brake issues.
Originally, the recall was implemented to address faulty EBCM software that could disable the electronic stability control and ABS. If the error occurs, the vehicle’s ESC and ABS malfunction lights will not light up, increasing the risk of a crash.
The fix was a dealer-installed reflash of the EBCM software. However, the software update from the first recall appears to disrupt the electronic brake control module when the vehicle is started using the OnStar app.
As such, a new revised repair seeks to update the twice faulty software issue.
According to the recent Detroit Free Press report, one owner said his 2019 GMC Sierra Denali had difficulty stopping after the repair was performed. Others indicated multiple instances of electronic braking system failure, as well as incidences of skidding into intersections.
Meanwhile, GM spokesman Dan Flores said that the revised repair will make the vehicles safe to drive.
“If any customer has a concern with their vehicle, they should contact their dealer immediately,” Flores said.
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Source: Detroit Free Press
Comments
Yep,
There’s our future of GM self driving software.
Cant get a vehicle to stop with only one input, the driver pedal !
Incredible !
Makes me want to run right out and buy one, and some GM stock also.
And their most important vehicle !
And I see of course they drug a Cadillac in with the troubles, that always helps sell a $100,000.00 vehicle !
I thought these vehicles did over air updates ? Another trip to the dealer ?
Sounds like you just loose abs and stab control. Hardly a complete brake failure. While it certainly needs to be addressed. If people knew how to drive it wouldn’t be such a problem.
Now you have to work for GM customer support !!
Blame a brake failure on the customer !
Classic GM customer support there !!
I never said it was the customer’s fault. The truck has hydraulic brakes just like all cars have had since 1940. The issue is you lose POWER BRAKES. Which means you have to apply more effort (push harder) on the brake pedal to stop. That is not brake failure. Try driving a car from 1960,with 4 wheel drum brakes and no power assist. You sir would cry.
It is NOT the same, I have driven many 40’s to 60’s vehicles without power anything, they are designed without power anything.
My 2015 Canyon lost its electric power steering and still has steering, but you could not even turn the wheel without power, GM had a Recall on that steering gear also !
These new power systems do not work like the old powerless systems, its not like adding a vacuum assist or not adding one. Vehicles no longer have the anility to be driven without power. Try it !
Well don’t try it on a busy street !
No. It’s brake failure. It like the master cylinder isn’t pumping fluid to the calipers. I could barely stop. Very mushy brake pedal. I found that if you re-start the car with the push button a couple of times it fixes it. However the CEL light stays on.
I’m one of the affected owners – you don’t know what you’re talking about. The brakes go to the floor without warning – maybe 10-20% braking effectiveness.
My 2017 sierra (67k mi) brakes went friday in a drive-thru! foot on brake…truck started rolling quickly (brake pedal hard as a rock). It took both feet on the pedal with both hands pulling up on steering wheel to stop it. “increased effort to stop” my ass!
all I could do to keep from hitting car ahead of me…and I’m 5’9 212lbs! towed to dealership. They say no recall but GM has a “special policy” in place to cover this.
There is no way if you “drive it right” you will not have problems…
OK lets see … you need lessons on “how to drive it right” ??
The actual problem is that you loose all boost.
Fix: new software “bandaid fix”
next… is what they should of done in the first place is to replace the booster, which is what they are doing now….
you would think having brake by wire ( which is way more important than throttle by wire), would have been totally thought out way before hand, this could be a disaster, i have heard of many problems already with this system , it would scare me if all of a sudden, pedal goes to floor , oh oh no brakes. come on GM this is unacceptable..!!!!!
does anyone know if and when the Silverado will get the multi-positional tailgate that the GMC has?
Word is next year. Mules have been spotted.
I’ve owned GM trucks for many yrs, do to the overall quality! My 2001 Cheyenne was one that pissed me off. You see trucks are ment. to work on all terrain, that’s why we buy them.💽 brake on the back are a bad investment if you drive daily on bush roads. 2010 Silverado Z71 I own now has drums, got 7yrs and 207000kms before changing the first time? 2001 Silverado had to change every 2yrs.GM engineers haven’t figured out that not all of us are willing to pay for expensive 💽 brake repairs, and definitely not at GM shop rate! I hate to say that I must wait for them to wise up, drum brakes are more reliable than 💽 because of the protection of the rear brake component’s I have already tried to discuss this matter with GM Canada,thanks for the opportunity to voice my opinion.
At this point I have to agree.
First I have owned GMC/Chevy trucks all my life and have never needed to replace back brake pads before 100k miles. I now own a 2017 Chevy Silverado 1500 4wd. At about 19k miles both back brake pads wore out and damaged rotors. Chevy replaced pads and rotors at no charge.
Truck now has 39k miles and back pads have worn out again. I replaced pads and talk to GMC/Chevy and they gave me a case number to have the problem diagnosed. Took to dealership and they found no problem.
Dealership maintenance record state: “fully inspected brakes, calipers, caliper slide pins, ebcm for possible codes for pressure issues in pressure module valve, inspected old pads. Appears to be even wear. Brake system operating as designed. Inspect only no issues found. Brakes operating as designed.”
My 2017 sierra (67k mi) brakes went friday in a drive-thru! foot on brake…truck started rolling quickly. It took both feet on the pedal with both hands pulling up on steering wheel to stop it. “increased effort to stop” my ass!
all I could do to keep from hitting car ahead of me…and I’m 5’9 212lbs! towed to dealership. They say no recall but GM has a “special policy” in place to cover this.
As I have already told several dealerships and GM Canada, 💽 brakes on back of trucks don’t work!!! Told the new 💽 brakes are great? So again I ask why are 2018 trucks having problems?because the truck is not sitting in the driveway looking good. It’s out doing what real trucks do working 365 a year.rear 💽 brakes are garbage on trucks that are exposed to gravel, muck bush roads and other stuff that the exposed rotors and rear brake components. .. my 2010 Silverado had 7yrs and 207000kms before I had to replace them? Thus again I plead with GM Canada and the other 2 of the big 3 ! To stop selling us consumers garbage! If the produce works, why try to reinvent it ? Money isn’t the way . Quality will get us back to purchasing the quality vehicles we can trust and realy on! So engineers , STOP BLOWING SMOKE 🆙 OUR BUTTS!!!!!
I have 2019 Sierra limited, brake pedal went to floor twice in a panic stop. First time rolled through intersection, second time luckily space on side of road to avoid hitting car in front of me. Dealer replaced vacuum pump, which doesn’t make sense to me, but if GM engineers designed a brake system that requires a computer to work, I guess anything is possible. Second trip to dealer found nothing wrong, I told them the pedal feels soft and if I slam on the brakes I can make it go to floor. Again nothing wrong with, no codes showed up therefore system is working properly. I can’t stand this truck, now because of plandemic I can’t get rid of this thing, nothing to replace it with. Can’t wait for GM to start building all ev’s.