I doubt it’s eating into your mileage, as it’s an electrical problem with a light, not a brake problem…may be freaking out a few people behind you with your 3rd light on all the time.
As for what to tell them, tell them exactly what you found.
I always back into my parking place, so in the morning, when I leave, I can check all the rear lights in about 3 seconds. Brake to remove from Park, reverse lights on my way shifting to Drive, and then running lights for a second as I leave. Works very well for me, and my wife.
Thanks chaissos and Cougar. I will keep you informed of the symptoms and/or outcome when I take it to the dealer.
Is that switch and easy fix or an all day job ?
I’m not positive (unfamiliar with that part at the moment), but I would expect it to take no more than an hour for someone with little mechanical knowledge. I suspect it clips in place, or possibly has 2 screws holding it.
UPDATE:
I took the car to a repair appointment on 7/1. Repair didn’t take long as I dropped it off for an 8:30 appointment and they called and said it was done by 11:30.
As usual and like previous appointments, the computer check didn’t display any codes.
So, the shop manager test drove the car and reported that the cruise control kicked off on him and there were spontaneous brake lights. Finally, someone saw what I have been seeing. The first time in the shop they reported no codes and no cruise fail when test drove. This time, success !
They proceeded to replace the Brake Switch and calibrated the BBP, whatever that is ?
So far it is working fine.
I want to thank everyone who responded to my post and your insight was very helpful.
Thank You.
What you should tell the dang Chevy dealer is to read their dang repair manuals for heaven’s sake. Not every problem has a trouble code. My gosh. They don’t see any codes, nothing’s wrong? How incompetent. I think I might want to write a letter on that one to the area manager. That’s just plain incompetent on the service manager and technician’s part.