Then it just stops won't even crank why?

Problem just started. Truck is off and parked for the nite. look outside and lights are turned on. Why and how can i fix it?. Truck is a hard body

acting like its not shifting into overdrive. what could be going on

How many quarts of oil for 5 speed 2×2 transmission?

I have replaced the centre bearing and the vibration is still there, after jacking the wheels off the ground and putting it in gear I can see the front driveshaft spinning out of round.

engine idles rough - can take five minutes to start without dying.
loses power rapidly when travelling uphill
chews a whole tank of fuel in only two hours on freeway

currently will turn over but then shudders violently and dies- just wont start.

after 15-45 minutes the #2 cylinder starts firing bad theres very little spark or none at idle new cap and roter

Was coasting down hill in neutral put cluch in heard loud noise clutch went to floor was able to pull it back up.Couldn't put into ANY gears while its runing. Starts fine but no gears.Started it in gear it started but acted as though I had no gears. Tried 4x4 still no gears.I don't know mechanical stuff and don't have a lot $ for repairs. So any advice is appreciated

some have said they have 3 some said 2 some said you had to replace the whole drive shaft.someone help.it vibrates bad when you let off the gas and before you change gears.

the noise does not start until I have been driving for about 10 miles or so

Have used colored leak detector, does not show up anywhere. I was told may be in the evaporator, can someone tell me where ths is located and how to check it?