Brake failure

Moe V · May 23, 2025

Kaziddle said:
Just purchased a 2024 GMC Canyon AT4X with 40 miles in January. Hit 4,300 miles and have the exact same issue. Brake master cylinder completely failed.
Brought it to the dealership yesterday and asked directly to their face "do you have the part", was told yes.

Today called for an update, was told "nope the part is on backorder, we don't know when it will be in".

Have you had any luck with yours

Moe V · May 23, 2025

...Update...
The part came in for my truck Monday, my truck was repaired by Wednesday. I picked it up yesterday... It took an entire month from start to finish. The brake feels extra sharp, I've only driven 30 miles so far.

Moe V · May 23, 2025

Moe V said:
I have a 2024 canyon at4x with 9300 mile, bought new.
Has anyone have their dashboard light up like a Christmas and suffered from brake failure?
I blew through a stop sign and almost crash into a wall, quick thinking I put it in manual mode and down shift using engine braking to come to a stop.
My truck has been at the dealer for 3 weeks with brake master cylinder failure. Parts are back ordered... I've been in contact with GM and the dealer. No ETA on when replacement parts will arrive...
View attachment 27860 View attachment 27861

Update guys I got my truck back yesterday after 1 month of it sitting at the dealer waiting on backordered parts.
Once the got the part it was a pretty fast repair. The brakes feels extra sharp, this could be in my head though because I haven't driven it in a while. So it all feels new to me again.... Love this truck!

R467X · May 23, 2025

You guys should start filing safety reports with NHTSA. This will be the next big recall after they replace 900k+ engines.

Kaziddle · Nov 20, 2025

Kaziddle said:
Just purchased a 2024 GMC Canyon AT4X with 40 miles in January. Hit 4,300 miles and have the exact same issue. Brake master cylinder completely failed.
Brought it to the dealership yesterday and asked directly to their face "do you have the part", was told yes.

Today called for an update, was told "nope the part is on backorder, we don't know when it will be in".

Have you had any luck with yours?

Update:

Was driving to work today and the same lights came on as before. So the part they put in must be no good.

Called today for a drop-off and loaner rental. They have "no loaners" and told me to drop it off in a few days. So have to hope it makes it to work for the next few days.

Under 6k miles and this happening for the second time is very ridiculous.