sammsy2

2018 GMC Serria Elevation 1500 my 4WD works fine to switch from 2wd to 4wd to haul out of the driveway and then switch back to 2wd. but when i need to use 4wd for a few kms, i cant get it to switch back to 2wd. but if i shut the truck off for a hour, start it back up and switch back to 2wd it switches back fine, seems like it wont go from 4wd to 2wd when its warm? anyone know my problem? Thanks in advance!