I had the problem in January with our brand new 2022 Escalade while up at our cabin in (oddly enough) Cadillac (Caberfae), Michigan. A neighbor came by to help who happened to be the GM engineer for some aspect of Corvettes. He happened to have the cell number for a buddy he said was the electrical engineer in charge of the Cadillac division as I recall. Really senior GM engineers. Anyway, neither was aware of the problem. I thought to disconnect the negative cable, and of course it worked.
My dealer was unaware of the issue, and sadly said there is no system to let customers know 1) there's a problem or 2) when there's a fix.
I called Cadillac customer service (800) 333-4223 and GM customer service (800) 462-8782 4/14 to ask about the progress toward a fix and to suggest they have a better system to make us aware of 1) problems and 2) fixes. Neither was aware of the problem. I gave them THEIR TSB PIT5873 and neither said they could even find the TSB. They said it could be someone else who made it up. I asked for a supervisor callback, and they GUARANTEED me I'd get one in 24-48 hrs. Case # 9-7603862539.
No call back.
TWO WEEKS LATER, I called Cadillac back (4/27). They said the case was closed, apparently they couldn't verify the issue. Headshaker. I asked why it was closed, why no supervisor callback, they had no answer. They said they could not reopen the case. I asked them to just copy the previous case and open a new one, and have a supervisor call. They said they would.
I promptly called GM Customer Service (4/27). (As an aside, they don't list a number on their website, they just list Chevy, Cadillac, etc. numbers. I had to dig online to get the above #, unsat for GM customers I believe). Explained issue and lack of resolution again. Agent wasn't aware of and could not find the TSB. Asked for a supervisor. On hold over an hour.
Problem 1--this issue exists, and GM either isn't aware, or working on it, or hasn't made enough progress in a timely manner.
Problem 2--No good system to let customers know of these problems, and their associated progress toward a resolution.
Problem 3--Cadillac and GM customer service not returning customer calls, and closing cases without resolution or notifying customers.
At this point, I plan to write to GM and inform them I plan to have an after-market remote installed and will take the bill to my dealer or to court for them to reimburse me. A new 2022 $105,000 car should have an operating remote start. They should have worked on the problem a little harder.