92 chevy 4 x 4 short bed vibrates at 55 mph. new bal tires. any suggestions

Question

92 chevy 4 x 4 short bed vibrates at 55 mph. new bal tires. any suggestions

Answer 1

drive shaft vibration... it isn't locked in 4wd is it?

Answer 2

re balance and then check tire pressure again.. while they're off, check for a separated tire.. bent wheel or bad bushings. you may even have a lightly bent axle.. 4x4's do that... from roughing them up... you will have some shake or vibration with most 4x4's due to the spring rates and the trucks dont wiegh anything in the back.. you should also check the drive shaft and u-joints if you have been off roading .its 16 years old and things are going to loosen up ! tie rods too.. new tires can set off all sorts of new problems on older cars and trucks. usually the tires are the problem.. even new tires go bad .. good luck