If it is the map light, be aware that those lights are wired (on our 2020) to the chassis battery, the battery that starts the engine. If you turn those on and forget to turn the map lights off and are parked without generator or shore power, those lights will kill the chassis battery.
I may or may not have done that when we parked at home after a trip...
Ray
PS: You should have a switch labeled Battery Boost. It's spring-loaded and when pressed and held it connects the house batteries and the chassis battery together. The purpose is to allow the house batteries to help start the engine if the chassis battery is dead.
I may have needed it...
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2020 Georgetown GT5 34H5
2020 Equinox Premier AWD 2.0L/9-speed
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