1998 Ram 1500 4x4 Changing Info 4WD on its own
My 1998 Ram 1500 4x4 wants to shift from 2WD to 4WD when I hit a bump.
Starts to make a grinding noise as I drive. As I drive I can shift from 2WD to
4WD and noise goes away. Can then shift back to 2WD while I continue to
drive and all is well again until the next bump. If I am already in 4WD then
bumps have no impact. I have also been having A/C problems with air only
coming out of defrost vents.