i have a 1951 GMC panel,i just finished all the body work and paint,i had never taken it for a ride until just yesterday and it was making a poping noise in the drive line<inclosed type of drive line>,iam not sure if the ujoints are doing this or not,but when i put the rearend on a set of jack stands and tried to turn the wheels,the drivers side turn freely but the passinger side will not turn forward and is hard to turn backwards,when i drive the panel it makes this poping sound but the passinger wheel does turn,since its a closed drive line iam not sure what is causing this or where to start,i checked the oil in the rearend and it is full,can someone please tell me what this may be and maybe what i need to do to fix this problen..if i need to call you to speak with you just give me your phone# and i will call,thank you..bob.209-532-8935
