I have a 1990 dodge, 4x4 ,automatic truck. I was stuck in the snow hauling wood and suddenly i have no reverse. The 4 wheel still works. I can drive in all gears but reverse.

Put truck in reverse and zig zag backwards turning truck left and right will take it out of four wheel when stuck.

If you are driving in 4 wheel drive on hard surface then you have drive line torque lock up as there is no centre diff to allow the front and rear wheels to equalise out the torque . 4 wheel drive is for use when on dirt / snow / ice where the differences between the front and back are allowed to slip the tyres . Jack up a rear wheel and allow the torque to dissipate by rotating a wheel . A point from all 4x4 manufacturers is that you NEVER drive in 4 wheel drive unless you are on dirt or ice/snow conditions. You have probably been getting away with it as any bump that lifts a wheel from the road surface will allow the wheel to slip. Even running the tyre on the white painted line on the road or any wet patch on the road will help ease the torque loading

Try backing up about 5 feet, put the transmission in neutral, then putting the transfer case (4x4 lever) into neutral or out of 4low.

The sensor for the 4x4 shifter is stuck. Mine does it when there's a lot of snow and ice under the truck. Unplug it, unscrew it and clean it. If that doesn't work replace it.

sounds like transmission damaged. if forward gears are operational, suspect transmission failure. If nothing working ( either in 2 or 4 wheel drive) suspect transmission or transfer case.

your drive shaft thats turning is mabe broke or your automatic 4x4 lockers could be bad

new tranny or get the one you have rebuilt,,,,,,,

The 1st time my 04 Sorento got stuck in 4WD low it was towed to dealership & they claimed it was the switch. Six months later, while on a camping trip, got stuck again. The local tow truck driver saved me hundreds of dollars in towing costs. Put it in reverse for at least 10-20 feet. That's it! He said that he found this to be a common problem. I later asked my dealership why they failed to mention this solution to me. They replied that they thought I knew! Spread to word!

i have an 86' trooper and i put it into 4 wheel drive one day and reversed and it got stuck and wouldn't move until i put it back into 2-wheel drive and drove forward

the rule is your not supposed to back up when in 4x4 drive it's bad for the axles so when backing up put it into 2-wheel unless it's a major emergency. it's bad on all 4x4 cars, unless it's an awd car :] hopefully this helped

On the plus side, 2wd gets better gas mileage, is cheaper to operate over time (no 4x4 transfer case or any 4x4 components to wear out or maintain). With a good set of snow tires and weight in the back, winter traction should be ok. The mileage 63k, is good too. If u live in southern New England, as I do, u can probably get by w/out 4x4.
On the negative side, If you have a job that requires u to be there no matter what the weather, and u live where there's a lot of snow, then maybe 4x4 is really necessary. How many days over the last few winters did you REALLY need 4x4? Around here, I'd say maybe 6 days a year. Do you really need it for 6 days?(or however many for your area). It is great to have when u need it, but u have to justify the extra expense for occasional need.
On a personal note, my 1st truck was 2wd, and I hauled a lot of stuff to the dump when I purchased a run down house. After loading up to overflowing, I got stuck in the yard, and had to unload everything to get out. I swore I'd never own a 2wd truck again. But gas was about 45 cents a gallon then, and now, 2 4x4's later, I avoid driving the truck due to gas prices, (I do plow snow, haul firewood, lumber, etc, buts after all this blah blah blah, I probably have u more confused than ever! GOOD LUCK, and let me know what u decide. countrycurt0