GMC Yukon sensor malfunction with erratic behavior when hatch opens on GMC Yukon

Some GMC Yukon owners report experiencing erratic behavior with sensors after opening the hatch, which may be attributed to several underlying issues. One common problem is a malfunctioning rear hatch switch, leading to sensor errors and unexpected activation of interior lights; inspecting and replacing the switch may resolve this. Additionally, some owners encounter issues with a faulty passenger seat sensor, resulting in beeping sounds even when the seat is unoccupied; temporarily fastening the seatbelt can help, but replacing the sensor is the recommended permanent fix. Furthermore, erratic sensor behavior may also stem from a hood latch sensor issue; applying WD40 and dielectric grease has been reported to alleviate the problem. If these solutions do not rectify the situation, consulting a professional mechanic or dealership for further diagnosis and repair is advisable.