98 Z71 Drags Right Rear Wheel Every 10 Ft When In 4wd
Ok i have a 1998 silverado z71 with a lift and 35's, whenever im on dry pavement and i turn on the 4 wheel drive and start to go the right rear wheel will stop for just a split second about ever 10 ft, when i put the truck in reverse and back up the left rear wheel does it and not the right. offroad i dont have this problem. The rear differential looks a little wet like the fluid is low, had the rear end rebuilt about 2 years ago, but dont know for sure what gears were put in, the guy says he think from memory he ordered 3.73s. Any help would be greatly appreciated. I would not normal care about this problem but im trying to sell the truck and i found a buyer and he doesnt wanna buy the truck until this issue is solved.
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The Z71 comes complete with a G80 LSD rear axle.(AKA POSI-REAR)
The benefit is you have three-wheel traction in dirt in 4WD. Both your rear wheels, and, if memory serves, your driver front wheel. This is great off road, and gives you a great advantage over a high percentage of stock 4WD trucks in the dirt.
Unfortunately, the locking rear can be a little miserable in tight turns on hard pavement. What you are experiencing is "axle hop" or posi axle bind. Since your rear axles are locked, there's very little play between the wheels, and when one wheel goes farther than the other, such as in a hard turn, the wheel going the lesser distance doesn't "slip" the way a standard non-posi rear axle does on hard pavement. With no other way to compensate, the stationary wheel, which is being forced to be stationary but wants to go the same distance as the wheel in the wide turn, breaks traction and spins, or "hops" to compensate.