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Do you have manual locking hubs? Are they unlocking? If automatic are they staying unlocked? If you have auto hubs, convert them to manual. Auto hubs will lock up if wheel brgs are loose or badly worn. More likely your transfer case is worn out. Remove the transfer case and check for extremly worn chain, bearings, shift fork, and transmission output shaft bearingsn(and transmission). Also the front and rear driveshaft output shaft brgs and U joints should be checked. Any leaks at the transfer case? They don't hold much lubricant and a small leak will lead to prompt failure. How many miles are on your Tracker? The transfer case maintenance is commonly ignored in this country..leading to failure. In any event, they are not high-milage vehicles. Sort of throw-away jeeps. Find a good low milage trans and transfer case unit and install it. Broken motor or trans mounts can cause this sort of condition under a load, but I would not think so while towing. Worn transfer and trans are common in those vehicles. Generally, trying to rebuild the things costs more than they are worth. Good used complete assy's are the way to go. Good luck! JR |