I have a 2016 gmc sierra 1500 and my park assist (rear only) will not stay on. When I push the lever on the dash, the light blinks for a few seconds and then goes out. I checked a few forums here and one stated disconnect the battery for about 10 minutes. I did that and no fix. I also removed the hitch from the receiver no luck there either. it appears that the truck electronics thinks that the trailer is still hooked up when it is not. This problem occurred only when I returned home and disconnected my trailer. Does anyone have any other advise? I'm not sure I want to go to the dealer and pay a fortune to fix some (hopefully) minor glitch.
Thanks.
