How do you repair intermittent shifting between 2WD and AWD-4WD of a 1999 GMC Suburban 1500 SLT during wet weather?
If you have the electrical (thermal) front axle engagement setup, it losses it's abilty to engage the front axle over time, and really has problems in cold weather. Replace it with a mechanical setup from "4x4 Posi-Lok". Their stuff is pretty much bullet-proof.
If you are driving under 30 MPH it probably won't do much damage, but shifting to neutral at highway speeds and you will ruin your engine. If you start skidding on an icy road (probably going 20 MPH or less) shifting to neutral will take you out of the skid and stop your vehicle immediately. Doing this spared me from colliding with another car when I was skidding in snowy weather.
The Earth's axis does move, but so slowly that it does not measurably affect weather. In addition to tiny wobbles, there is a long-term variation in the inclination of Earth's axis of rotation with respect to the orbital plane which occurs on a 41,000-year cycle; it varies between 22.1 degrees and 24.5 degrees. That is enough variation to cause climate change. The tilt is currently 23.44 degrees and decreasing.
We have winter from December to late March or April, with tempratures for 0 to -20. Usually a lot of snow. The spring is in May with shifting weather and temperature. The summer is long and can have temperatures up to 25 degrees, from June to September. The fall is from September to end of November. It can be between 15 to -5 degrees and it is windy, rainy and dark