Brake Failure, Top Speed of 43 MPH

[twz]

On 12/16/2024 at 5:00 PM, twz said:

 

Hello,

 

I too am having this problem on my 2023 sierra 1500 SLT. The dealer says they can’t find anything but it has happened twice already. I’ve opened a claim and they tell me that the dealer said they didn’t find any codes but I personally was able to pull the codes, so I know they exist. In addition to this the service woman that received my truck that day said some codes were showing. This is a huge safety concern and the loss of braking is no laughing matter. Their attitude towards the situation is unacceptable in my opinion. Customer service at GM said there is nobody to escalate this situation to. Please give me some direction on where to go.

@GMCustomerService

[Lloyd B]

My daughter has a 2024 Chevy 1500 and haas been having the same complete loss of steering and brakes and countless lights on in the dash. The dealership says they can’t find anything and says TSB #23-NA-201 doesn’t apply and refuses to even check them. The components are the same, the grounds are the same and she is going to eventually crash!!!

[GMC Driver Now]

Howdy everyone,

 

I’m new to this forum so I don’t know if there is a better place for this to be or not.

 

I have a 2024 gmc sierra that I have a C15C700 code on. The brakes were very spongy when I bought the truck so I bled the brakes and performed an automatic brake bleed, and when it goes through the process it finishes and it still has the code. It limits me to 43mph and sometimes it will be 62mph. What should I try to get this fixed.

[66ss3964spd]

How many miles are on it? Might still be under warranty. If it is let the dealer deal with it.

[GMC Driver Now]

It has 23,080 mi. on it, but it was wrecked when I bought it and so that took the warranty away.