I have 99 blazer 4x4 I put oo blazer tranny in it from junkyard it moved 20 ft and stopped and won't move at all I pulled top tranny line off cooler and barley got fluid when vehicle running

SOURCE: Dodge 2500 RAM 4x4 Tranny problems

the gears in transmission are going out..aka slipping.....check out pavementpounders.com or gotmud.com they cn help you out better on there than on here

SOURCE: Transmission fluid flushing

In normal situations people do not flush their trannys. Your would normally just lower the pand and change the filter and replace the fluid that came out. If you are not having a problem with your tranny this is what I would suggest. As the fluid gets older the tranny gets "used to" the old oil that is in there. When you add new fluids the new fluid contains detergents that clean the internal parts as they circulate. Unless this is the first time you've been to the recommended mileage for changing the fluid (I.E. 30,000 miles) you could flush it. If you do not know the history of changes, or if you are at, lets say 100,000 miles I wouldn't recommend flushing it. When the new detergents clean out the parts they remove gunk that is actually helping the transmission. Don't get me wrong, you don't want a whole lot of gunk, but you also don't want to remove gunk that for example is holding a pin in place, so the pin falls out (just an example) I hope this wasn't too hard to understand, and I hope I answered your question.

SOURCE: 99 dodge ram 4x4 w 360 engine trans has only 1st gear and reverse

Are you saying you put in a new but used tranny and it still dosent go out of first gear? Or are you saying you replaced a tranny line? If its the tranny you replace and first is the only gear you may not have adjusted the shifting linkage correctly. Put the truck in park and loosen the linkage on the tranny and slidr the rod on the tranny back and retigten and try that

SOURCE: 99 chevy lumina 94k mi transmission stopped working. Fluid good.

check fluid level, make sure proper fluid is in transmission otherwise take to trans shop to diagnse if level and type is correct(check at idle normal operating temp)

SOURCE: hi my name is chris

There's been a lot of problems with the 4wd systems on the blazers of that vintage. The only sure way to track down the cause is to have the system scanned. Some of the most commom causes are: the switch in the dash, - the control module, - the transfer case . There are other issues if it has auto 4wd as the ABS system is tied into that system to activate it when the sensors sense wheel slippage. If your blazer has the auto 4wd funtion and has a ABS light on, it could be in the ABS system.
IF you could get it back into 2wd, you could pull the fuse to the 4wd to dis-able untill you have a chance to have it scanned.