Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
2102005
According to International Recall 25507/25V414: "Residual brake fluid may be present in the brake pressure switch/fuse harness, which was not detected during the completion of the original recall remedy under Safety Recall 23V-282 (23511)."
511964
According to General Motors/Chevrolet recall N242842680: "The brake pressure sensor assembly may allow brake fluid to leak beyond the diaphragm seal into the brake pressure switch. As a safety precaution, General Motors recommends that you park your vehicle outside until the remedy can be performed. The brake fluid may seep into the sensor assembly electrical components and short the brake pressure switch and associated fuse. If brake fluid shorts the brake pressure switch and the associated fuse, the circuit can generate excessive heat that could result in a fire, increasing the risk of injury. An under hood fire may occur when the vehicle is off and possibly unattended."
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.