I recently replaced my motor mounts and tranny mount because my engine was moving so far forward under a load that my fan was eating into my radiator. The problem was fixed for a few days and now has returned. I am at a loss on this one guys. I have also noticed lately that the truck rocks forward and backward excesively when I come to a complete stop. Related?? Any help would greatly be appreciated.

 

could the body be moving from loose body mounts, the fan shroud and radiator is connected to the body one or the other is moving

 

How about the slip joints on the drive shafts?

 

I would be looking for broken leaves in the rear spring packs. Sounds like you are getting some excessive axle wrap that is pitching the diff. This would, if your driveshaft is a little long, cause the push on the drivetrain you are seeing.

Check all of your rear suspension for wear and/or damage.

J-eh

 

Still think it may be spring wrap.

the rocking back and forth sounds weird... Do the wheels stays stationary while the body does this?


Jason