Mjones14

Have not seen any water or signs of it but hear it anytime rain or carwash occurs.

Any luck with the fix for the water issue? I have the same issue on a 21 Tahoe High Country. I did find the Bulletin # 20-NA-219 around the correction to a improper installation of sunroof drain line. May be of use. Mine now has thrown multiple codes and worried they may be related.

First alarm was a "Service Driver Assistance System" about a week and a half ago. Alarm seemed to reset itself and all functions were fine. Then this morning the vehicle seemed to have a battery issue as well out of no where, took a couple of tries to turn over and start. One of the 8 system alarms after starting was the "Brake System Failure 317 MPH Top Speed"! Anyone seen anything similar? I know low voltage issues will code all sorts of alarms.