I can shift the transfer case high neutral low easily. But nothing happens when it's on neutral or low. The SUV doesn't move. When I shift to high, it moves. My parents have been driving this way for about 10 years. I planned on fixing this issue. Give me some ideas! Tomorrow I plan on changing the transfer case oil. I'm sure it was never done in 10 years. The parent only does a standard oil and transmission oil change.