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G-503203
GM Now has an answer to this issue: Brake Pedal Play May Affect Cruise Control Operation – TechLink
Our car is into the selling dealer to check to see if it warrants the harness/pedal repair . Same story as the other dealer - if they don't find a problem they will have to charge us $120 ?????????? . there is a problem -since we purchased it !!!!!!!!!! . My wife said they seemed to imply , if we had spent more and purchased a Cadillac , we would't have a problem , so I guess a $40,000 car isn't expensive enough to get one that works . What a network of idiots , sarcastic , could care less bunch . We will see what happens . I don't think we have a lemon law in Canada .
Good luck with yours.
We took it to the dealer , we bought it from and left it for 3 days , and they put in a brake position sensor and a slip that held the brake master assembly ball in the brake pedal assembly in November 2022. They said they would replace the pedal assembly if the problem surfaced again ( the techlink memo came out 3 days after that attempt). The problem occured again , this April 2023 , and I called a dealer much closer to us , and told them about the techlink article , and they ordered and replaced the pedal assembly after checking the problem out , it's worked fine since .Bringing this back from the dead, but completely forgot about it a while ago.
For ours, replacing the pedal wasn't enough. They had to replace the wire harness that connected to the brake pedal assembly, since it was a fault in the connector itself.
Once they replaced that (which involved the entire dash and interior up front coming out in the process) back in October, we haven't had an issue since.
Our dealer was worthless though and ticked me off enough after sticking us in turds of rentals (one was an 08 Acadia with 200k miles and a slipping transmission) that we filed a lemon law suit against GM. Ended up opting for a cash and keep settlement out of the deal.