Drivetrain Vibration during acceleration.

[1997c1500]

At about 50 mph my 1992 c1500 rclb has a drivetrain vibration. It only happens under acceleration. We already replaced the U joints. Thanks in advance.

 

[Erik the Awful]

How's the carrier bearing?

 

[Keeper]

Motor mount?

 

[HotWheelsBurban]

Yep I would look at that closely too. And when you get ready to take it apart, take pictures of everything before, and be sure of the correct orientation and direction of all the parts when you reinstall everything. Some of these units are directonal and if not installed correctly, you'll have just as much vibration as before. Learned that on our 84 square body Burb, ended up doing the job twice (in January,at night,on a gravel driveway).