DEFINITION: The roughness or vibration occurs while driving the vehicle at various speeds.

There is a bent or dented propeller shaft.

Replace the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .

The undercoating is on the propeller shaft.

Clean the propeller shaft.

The tires are unbalanced.

Balance or replace the tires.

The universal joints are tight.

On the snap ring retainer U-joints, tap the yokes with a hammer in order to free up the U-joints. If you are unable to free up the U-joints, or if the joint feels rough, replace the joint.

The universal joints are worn.

Replace the worn universal joints. Refer to Universal Joint Replacement - Nylon Injected Ring .

The companion flange is bent or has excessive runout.

Replace the companion flange.

There are burrs or gouges are on the companion flange.

The propeller shaft, the parking brake drum, or the companion flange is unbalanced.

There is an incorrect rear joint angle usually as result of the angle being too large.

There is excessive looseness at the slip spline.

Replace the necessary parts.

There are distorted or damaged yokes or flanges.

Install new yokes or flanges.

The driveline vibration is at 80 km/h (50 mph) or above.

Inspect the propeller shaft for runout and for missing balance weights. Correct the balance weights.

The propeller shaft and axle flange paint marks are misaligned by more than 90 degrees.

Align the paint marks as close as possible.

DEFINITION: You hear or feel a roughness when driving the vehicle above 56 km/h (35 mph).

The tires are unbalanced or worn.

Balance or replace the tires.