Service ESC - Brake System - Code U2413 - Intermittent issue

[RNAGenetics]

I've got a 2020 Silverado RST 5.3.  About a week ago I got a a Service ESC - Brake System message on my dash along with one of two limp modes, either speed limited to 62 miles per hour or 43 mph. The issue is intermittent but when it does happen the abs system shuts down and the brakes feel like they are full manual brakes.

 

I have an appointment scheduled for the dealer on Tuesday but I was able to run the codes via my main mechanic.  It shows a U2413 code which is a Serial Data Gateway Module failure.

It throws a bunch of other codes related to not being able to communicate to other modules.

 

Hoping its just an ESC flash similar to the 2019 recall but who knows. Considering pulling the S&B cold air intake to avoid any warranty issues.  Thoughts on this?

 

Mods on the truck

S&B cold air intake

Amp-research steps

Hypertech Speedometer Calibrator

Autostop Eliminator

[RNAGenetics]

Additional Codes thrown

U0146

U0100

U0101

[RNAGenetics]

Question of they day: "Have you ever worked in the car industry?"

...

I went to pickup the the truck after a reprogram of the brake control module and a 5 mile verification drive and that was the question asked when they pulled the truck up for me.

Perplexed I said no and he said,  "Are these the same esc warnings you were getting when you dropped it off?" Yes sir same exact messages.

 

So needless to say I got a lyft to work and they took the truck back to run the codes again and take another look.

[RNAGenetics]

Got an update today. They are replacing the brake module.  The part is coming out of California to Arizona so I should get the truck back early next week. 

[RNAGenetics]

They replaced the master cylinder and brake module.  Worked great for the 1st day.  The next morning I had a Service Brake Assist message on the screen.  Back to the dealership.

[idle_liquid]

Did you ever get this issue diagnosed correctly? I am getting the same codes on a 2019 Silverado. 

[GMCustomerService]

On 9/16/2022 at 9:53 AM, idle_liquid said:

Did you ever get this issue diagnosed correctly? I am getting the same codes on a 2019 Silverado. 

This is certainly not what we like to hear, idle_liquid.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2019 Silverado. To do so, please send an email to [email protected] with ATTN: idle_liquid/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s privacy policy, please visit https://www.gm.com/privacy-statement.html.
 
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[Cam C.]

On 9/16/2022 at 5:53 AM, idle_liquid said:

Did you ever get this issue diagnosed correctly? I am getting the same codes on a 2019 Silverado. 

Well did you ever get it straightened out? Mine threw that code and all the lights and gauges went black as soon as i pulled onto the highway. 2020 GMC ZRX

[davester]

...just fyi, you probably won't get a response from idle_liquid, as that user signed up, made two posts on one day, more than 3 years ago, and never returned to the site...